#Ladle Slide Gate Mechanism

[xinmichangxingrefractory-blog]

Reasons of ladle slide plate crack

Firstly, when the molten steel flows through the casting hole, the temperature suddenly rises, and radioactive thermal vibration cracks are generated around the casting hole. Secondly, the cast hole is first subjected to thermal shock and expansion. The change in position is slightly smaller. When the thermal conductivity is small and the temperature gradient is large, a large thermal stress is generated at a certain distance from the casting hole of the sliding plate to cause cracks. Thirdly, ladle slide plate is a non-homogeneous material, especially a composite ladle slide plate. It is easy to cause cracks due to different expansion coefficients. At last, mechanical constraints. The slide is heated by the heat, if there is no gap or gap between the two ends of the sliding box and the slide, it will be restricted by the side wall of the sliding box when the board expands. And the sliding plate is a brittle material, and excess crushing strength leads to crack.

Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.

Article Source: ladle slide plate Company name:Henan Xinmi Changxing Refractory Materials Co.,Ltd Email: sales1@chinafirebrick.com Website:http://www.chinafirebrick.com/

[mshermia]

LYKHIW Timeline - WIP Page

Welcome! This post records the status and progress of my work expanding my Post-Endgame (MCU) series to “Like You’d Know How It Works”.

I left the cinema post-Endgame incredibly mad and disappointed. After I aired my immediate frustration with the movie in two One-Shots, I decided for my own peace of mind, I had to try and salvage the mess that was Endgame somehow, because I simply like the characters too much, not to. A week after I started writing, I published the first chapter on AO3. About a year later, I felt the need to expand on the original fix-it. I have and will continue to add to this timeline, writing different adventures that will mostly focus on Tony Stark and Peter Parker.

Genre: MCU fanfiction

The Fix-It

Like You’d Know How It Works (completed)

Setting: sets in right after the battle at the Compound is over, supersedes the concluding events of Endgame.

Premise: Straight after the battle is won - or lost, depending on your perspective - Peter tries to convince the Avengers to save Mr. Stark by going back into the Quantum Realm.

Tropes: time-travel, quantum realm, protective Peter

Mood: grief & loss, hope, family

Someone had organized this room at Metro General hospital for them to sit and talk. Sitting was not an option for Peter though. He couldn’t bear to sit. He couldn’t bear to have anyone look at his injuries either, not when there were more pressing matters to attend to.

“You said that whatever we do in the past will not change our present!” Peter’s fist hit the table with a crash. They simply weren’t listening. His face felt grimy and tight in places where the dirt from the battlefield stuck to the tears he had cried over Mr. Stark’s body. Maybe he should have thought of washing the traces off his face before confronting a few of the Avengers and Doctor Strange. It might have made him seem a little more collected. A little more rational. “That’s what you just said!”

Chapters 9/9 | 42 K | Teen and Up

Follow-up Shorts and Multi-chapters

Just Outside The Door (completed)

Setting: Days after Tony was brought back from the multiverse

Premise: Peter did it. He found his mentor and brought him back, but sometimes it all just seemed too good to be true. Sometimes, his mind played tricks on him and he just couldn’t sleep, wondering if he had really brought Mr. Stark back or if it had all just been a desperate dream.

Tropes: nightmares, PTSD, protective Tony, Whumptober 2020: No. 23

Mood: fear, working through trauma, comfort

There was only silence in his room now unless you were to count the frantic beat of his heart and the deep shaky breaths he sucked in and blew back out. It hadn’t even been a nightmare this time, not truly. He hadn’t really fallen asleep in the first place. Exhaustion was tugging at the edges of his consciousness and that’s where his thoughts had started to spiral.

Mr. Stark was okay. Peter was… he was pretty sure of that. He had succeeded, had brought him back home and now he was okay. But there was a little voice in the back of his head that kept nagging, that kept telling him that maybe… maybe he was wrong. Maybe it had all been a delusional dream, too good to be true, Peter wishing something into reality that was unobtainable. He had seen his mentor die after all. He had died right in front of him, the memory etched into his memory, right there whenever he closed his eyes. Dimensions, time travel… was that really real?

Chapters 1/1 | 4.2 K | Teen and Up

Nothing Left To Lose (in progress)

Setting: 2 weeks after Tony was brought back from the multiverse

Premise:

The reversal of the Snap added an additional 3.5 billion people back to Earth’s population. 3.5 billion more people to house somewhere, 3.5 billion mouths to be fed, 3.5 billion people who return to a world that was not expecting them to ever come back.

Tropes: food shortage, starvation, looting, blurred lines of good and evil; Whumptober 2020: No. 3

Mood: anger, desperation, conflicted who to help 

Tony groaned, rolling his stiff neck from one side to the other as the gate clicked shut behind Pepper. “Remind me again… Why did we agree to this?”

Pepper didn’t bother to send him a scolding look as she wrapped the security seal around the gate’s locking mechanism. “Because we’re good neighbors?”

“We are?” He smelled like damp fur. When did wet fur and barn animals become his life? “Since when exactly? Was there a house meeting? Did I miss it?”

“Mh… do you need a reminder of the process of negotiation?” She took a step towards him, one hand twisted in his shirt pulling him close against her, their lips almost close enough to touch. “You smell like wet alpaca.”

He pulled in an affronted gasp. The hand that was still holding his shirt pushed him away from her, her lips stretched wide in amusement. “Come on, Cesar. Maybe I’ll remind you after a hot shower.”

Chapters 1/2 | 3.4 K | Teen and Up

Unnamed WIP (unpublished)

Setting: 4 months after Tony was brought back from the multiverse

Premise:

For months, Peter has been commuting between the city and the Stark’s remote cabin in the woods. But now that life in NYC has regained some normalcy, he really wants to show Morgan what the greatest city in the world has to offer.

Tropes: power outage, panic attack, PTSD; Whumptober 2020: No. 27

Nope. “Not going down that rabbit-hole, Parker,” he muttered to himself.

“What rabbit-hole?” Morgan was sitting opposite him, munching on the cookies Pepper had put out.

“Nevermind.” Peter scooped two tea spoons of sugar into his coffee, then added another one just to be safe.

“Mommy says coffee corrupts the soul.”

“Please, like you even know what ‘corrupt’ means….”

Morgan tilted her head to the side, just like her mom would do. “I know it’s not nice.”

Peter gave her a look. “Well, your dad says it’s the elixir of life.” And Mr. Stark would know. Peter gave his head one hard shake. Tony. Tony would know. One sip of the black brew and Peter’s teeth hurt. Definitely too much sugar. “Okay, remember what we talked about?”

Morgan sat up straight, her eyes wide. “Ask mommy first!”

“That’s right! Make sure you use those puppy eyes, too.” Morgan nodded along enthusiastically while he quickly nicked her glass of milk and poured a generous potion of it into his mug. “We wait till, you know, till Tony’s gone downstairs or something and then—”

“And then you’ll ask me what?”

Chapters -/2 | - K | Teen and Up

Christmas Eve - At Peace (completed)

Setting: 5 months after Tony was brought back from the multiverse

Premise:

Just a couple of months after they defeated Thanos, Tony and Pepper throw a Christmas party. Instead of a partying kid, Tony finds his Spiderling outside in the snow at the grave he has been trying to ignore ever exists.

Tropes: anger and grief, blame and fear, no prompt

Mood: wholesome, family, frustration

Tony narrowed his eyes at him. "I mean it!" For good measure, he took a healthy gulp from the cup, positively burning his throat in the process. But it wasn't until Harley threw his hands in the air and turned his back in defeat - for now - that Tony allowed his face to cringe at the sting. Those little trouble makers were not helping with his heart condition. Speaking of trouble... "Where is Peter?"

Harley crossed his arms in front of himself, his mind clearly brooding on a new strategy. "No clue."

Tony's next sip of the hot wine was a lot smoother than the first. "What do you mean, no clue?"

"It generally means that the person doesn't have any information about the subject that you are—"

"Alright, short stuff..." Tony's eyes were searching the room but the little spider was nowhere to be seen. "A bit less of the asshole routine please?"

"Listen, if you want me to babysit, same rules apply as they do for Morgan." Brazen in his brattiness, the little shit ladled a good helping of mulled wine into a new cup. "I'll need a heads-up and generous compensation that I'm happy to re-negoti— Hey!"

Harley tried to hold on to the cup that Tony once again just plucked from his hands. "You've had enough of this!"

"That one is for Rhodey," the boy scowled.

Chapters 1/1 | 3.8 K | Teen and Up

The Winter Air (completed)

Setting: 6 months after Tony was brought back from the multiverse

Premise:

Tony, Peter, and Morgan spent a winter day outside the Stark residence.

Tropes: accident, hurt Tony, hurt Peter, Whumptober 2020: No. 13

Mood: fun to fear, injury, accusations, blame

Well, it wasn’t that easy. Because things were apparently never just easy in the life of one Peter Parker. Turned out, there were still some assholes out there. Not the Thanos-kind. Not for now at least. The regular kind though and Peter for one saw absolutely no reason as to why anything should have changed in his responsibility to stop them from being assholes.

His aunt somehow disagreed more often than she didn’t. Annoyingly now though, she managed to drag Mr. Stark to her side a lot more than she used to, too.

Peter shook his head at himself. Tony. T-O-N-Y. It wasn’t that hard, was it? He still slipped up every so often. But as much as that bugged him, it was the others who bugged him even more. Colonel Rhodes and Hawkeye among them the most willing to tease Peter about it. Him, and Tony too, for his mentor never commented on it with more than a crooked smile. When it was just the two of them, that was often the only indication for Peter, that he had said it again.

It made the times when it really was just them so enjoyable. A new ease between them. They had never had this, this kind of bonding. Sure, they’d spent time together before everything had gone downhill on their little space adventure, in the lab or on a normal earth-bound mission. Not like this though, not like Peter staying over at the Stark residence for a few days at a time. Not like him sliding along-side Morgan on the ice on the lake, trying to catch Tony. Not like Morgan falling over and taking Tony right with her and the way Peter’s stomach hurt from laughing so hard when Mr. Stark’s sweet little Morguna drowsed him with two full hands of snow and he just hadn’t seen it coming.

Chapters 3/3 | 14 K | Teen and Up

Unnamed Multichapter WIP (unpublished)

Setting: picks up where The Winter Air ended, 6 months after Tony was brought back from the multiverse

Premise:

First time all of the Avengers come together after the Snap was reversed. With Tony retired, Peter has to find his place in the team and learn to work with the other Avengers without Tony. Tensions are running high with the events of Civil War still largely unresolved and lingering resentments stemming from Peter’s multidimensional rescue mission to save Tony.

Tropes: Avengers mission, mistrust, growing as a team; Whumptober 2020: No.7

Tony’s eyes went wide. Was it possible that…

“Hey, FRI?”

“Good morning, boss. It’s 10:16 am on February 5th, 2024. The temperature outside is—”

“Yeah, just… can you stop for a moment?” He waved her off. “Send Dory out to the lake, would you. There’s some stuff still lying out there on the ice.”

“Right away, Sir.”

Tony watched as the little blue drone circled the lake, getting closer and closer to what he was sure were the Spiderling’s clothes still lying out there, where he had taken them off to—

“Hey, what are you doing out of bed!”

Despite himself, he twitched as Pepper made her way into the room. She had pushed the door open with her hip, balancing his breakfast on a large wooden tablet.

“Here, let me—” Tony stepped towards her, arms at the ready to take the tablet but she held it out of his reach.

“What do you think you’re doing? Get back in that bed!”

Chapters -/- | - K | Teen and Up

There... And Back Again (in progress)

Setting: about a year after Tony was brought back to life

Premise:  The Starks drive upstate to the old Mansion where Tony grew up. To Tony’s horror, the trip takes him and the kids a lot further down memory lane than anyone could have predicted.

Tropes: time travel, Howard Stark’s A++ parenting; Febuwhum2021 Day 12 - Who Are You

“Pete, seriously…” Tony looked up into the review mirror trying to catch his eye. “Can you not? I don’t want Morgan up all night, terrified of some dumb ghosts.”

“Come on, it’s just a story, Tony. Morgan knows I made it all up, right?” Peter winked at her, then wiggled his eyebrows in a way that seemed kind of familiar.

“Yeah, daddy.” But Morgan was full-on ignoring Tony, her eyes on Peter trying to imitate the wink and wiggly eyebrows he had just sent her way. “It’s just a story.”

He could do little more than groan as Peter continued to spin a tale of spirits and witches, ancient pacts and promises that had to be kept, ransoms that the spirits had vowed to retrieve.

“It was a night very much like tonight,” Peter continued, his voice low and full of dreadful foreboding, “that the witches broke that pact they had signed with the blood of the innocent…”

“Morgan’s gasp morphed into a giddy giggle while Tony could only rub a hand across his brow and mumbled, "Blood of the innocent, give me a fucking break…”

Chapters 1/3 | 4,4 K | Teen and Up

Are We Out Of The Woods Yet?, (completed)

Setting: 4 years after Tony was brought back from the multiverse

Premise:

 Peter takes Morgan into the depths of a National Park so she can collect samples for a biology project.

Tropes: Peter & Morgan, protective Peter, hurt Morgan, hurt Peter, Whumptober 2020: No. 12

Mood: disappointment, mistakes, anger, angst, comfort

“There are so many reasons why online classes are better than going to school.”

Peter shook his head. “And there are plenty of reasons why learning in school with other students is preferable. How it helps retain the material better than—”

Morgan groaned without even looking at him, her nose in the air, eyes on the leafy trees above them. “You can learn the same things at home, only then you could have dinner at night with us instead of in your stinky room in Boston.”

“Hey,” he craned his neck to see where she went, then walked after her. “My room doesn’t stink.”

“It’s a boy’s room.” She said it like that alone was a valid argument, when it couldn’t be further from the truth. In fact, the girl’s dorms he had been in—

He stopped himself. Not the time and place.

Chapters 2/2 | 8 K | Teen and Up

[cxrefractories]

How to prevent the tundish nozzle from clogging

Tundish nozzle plays a very important role in ladle steel making.It is very important to learn the measures to prevent the clogging of the nozzle of the tundish. There are some measures to stop clamping at tundish nozzle.

Measures to stop clamping at tundish nozzles

(1) Ensure that there is no deformation in the sliding mechanism of the continuous casting sizing nozzle, there is no foreign matter on the sliding stroke of the sizing nozzle, and the gap between the sizing nozzles is less than or equal to 0.3mm.

(2) The size of the zirconium sizing nozzle is reasonably designed, there is no damage and cracks before use, and the board surface is flat without unevenness.

(3) The production rhythm is stable, the quality of molten steel is qualified, and there is no phenomenon of high and low temperature and molten steel interception.

(4) The personnel for replacing the sizing nozzle are skilled, and there should be no accidental burning or diameter expansion caused by human factors.

The disorder of casting process because of nozzle clogging is a long-standing issue ever since the continuous casting process has been introduced. Nozzle clogging is the build-up of solid or semi-solid material on a refractory surface which can become problematic during steel pouring, as it can affect the stream dynamics, reduce the pouring rate, and cause large agglomerated particles to be intermittently released into the liquid steel stream in severe cases. Because of the nozzle clogging, the casting speed is frequently decreased, and even an entire cast is to be abandoned.  Further, nozzle clogging can give rise to both quality and productivity problems.

During the continuous casting of liquid steel, steel flows from the tundish to the mould through a submerged entry nozzle, (SEN) as shown. This protects the liquid steel from reoxidizing in contact with the atmosphere. The flow rate is controlled with a gate or stopper rod to maintain optimum casting conditions. If the nozzle clogs and the flow control cannot make up for the reduced flux, the nozzle has to be replaced which means the production is interrupted. The clog build-up can also result in decreased steel quality as oxide particles can loosen from it, giving rise to rather large inclusions.

Tundish nozzle clogging problems take several different forms, and can occur anywhere inside the nozzle, including the upper well, bore, and ports. They are classified into four different types according to their formation mechanism namely

(i) the transport of oxides which are present in the steel to the nozzle wall,

(ii) air aspiration into the nozzle,

(iii) chemical reaction between the nozzle refractory, and the steel, and (iv) steel solidified in the nozzle. In practice, a given nozzle clog is frequently a combination of two or more of these types, and its exact cause(s) can be difficult to identify.

Problems caused by clogged tundish nozzles:

Clogging of the tundish nozzle is a major castability problem in continuous casting of steel for several reasons. Firstly, clogging increases the frequency of operation disruptions to change nozzles or tundishes or even to stop casting. These extra transitions increase operating cost, decrease productivity, and lower quality. Secondly, clogging can lead directly to a variety of quality problems. Clogs change the nozzle flow pattern and jet characteristics exiting the ports, which can disrupt flow in the mold, leading to surface defects in the steel product and even breakouts. Dislodged clogs also disturb the flow and either become trapped in the steel or change the flux composition, leading to defects in either case. Quality problems also arise from the mold level transients which occur as the flow control device compensates for the clogging.

FAQ:

What is a tundish nozzle?

Tundish Nozzles are an integral part of Continuous Steel Casting process. These products are instrumental in controlling the flow of Molten Steel from Tundish to Continuous Casting.

What is the HS code for tundish nozzle?

69032090

What is the function of a nozzle?

The primary function of a nozzle is to control flow rate and convert the spray liquid into droplets (via atomisation) that are of a suitable size for depositing on the intended target.

What are the uses of tundish?

What does a tundish do? A tundish is installed to prevent cross-contamination between an overflow pipe and a drain pipe. Unsanitary water from the drain pipe could theoretically enter the system if a tundish is not installed to block this.

The number of melting sequences is important in choosing a Tundish nozzle. Different nozzles for single use Melting or multiple melts are produced and used. It seems necessary to use more resistant material to achieve higher sequences. Welcome contact us to choose the right nozzle at the lowest cost.

[cxrefractories]

The essentials for the use of slide gate plate

The essen The essentials for the use of slide gate plate tials for the use of

slide gate plate

:

1. Prevent the occurrence of “slag going through” phenomenon during casting. 2. Pay attention to save the stroke when the continuous casting is controlled and the closing operation is completed. 3. Prevent improper operation of nozzle cleaning which could cause the expansion of the casting hole to be too large. 4. After cleaning the nozzle and removing the scrap of the colletor nozzle, carefully check the erosion of the three joints and the sliding surface of the sliding nozzle from the casting hole while moving the slide gate plate. Stop using when the joint erosion is obvious or the sliding surface is obviously rough. 5. While pushing and pulling the ladle slide gate plate in the whole process, check the matching condition of the sliding surface of the upper and lower slide gate plates from outside the mechanism to determine whether the mechanism and the spring work normally. If there is a gap between the sliding surfaces or the sliding speed of the lower slide gate plate is too fast or too slow, etc., stop using.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality ladle slide gate plate are good sold to many countries say South Africa, Bangladesh, Indonesia, Malaysia, etc. Shall any interests, welcome to contact us. Our team would make best to be your reliable partner!

Article Source:The essentials for the use of slide gate plate Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products:https://www.cxrefractories.com/en-product-solution Email:info@cxrefractories.com Website:https://www.cxrefractories.com

[cxrefractories]

The four most common damage mechanisms of magnesia carbon brick

1. Slag causes melting and dissolution of magnesia 2. The oxidation of carbon (1) Direct oxidation The carbon in the MgO-C brick is directly oxidized by oxygen in the environment, generally occurring below 1400℃. (2) Indirect oxidation Indirect oxidation generally occurs above 1400℃, and indirect oxidation is divided into intrinsic oxidation and external oxidation. 3. Corrosion caused by molten steel flow (1) The slag layer formed on the working surface of the magnesium carbon material could be washed away by the flow of the molten steel, or the slag is insufficient. (2) Repeated heating and cooling during the production process and the stirring force of the molten steel may cause the structure of the material to relax. 4. Hot peeling and mechanical peeling.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality ladle magnesia carbon bricks are good sold to many countries say South Africa, Bangladesh, Indonesia, Malaysia, etc. Shall any interests, welcome to contact us. Our team would make best to be your reliable partner!

Ladle Magnesia Carbon Brick:Magnesia carbon brick is made of fused magnesia and high carbon graphite, with antioxidant was added, and the phenolic resin was used as the binder for high pressure molding. MgO-C refractory bricks are widely used in steel industry.

Ladle Purging Plug:Ladle purging plug has been in the leading position in domestic and abroad over years. We have developed the series of corundum, chromium corundum, low silicon chromium corundum and corundum spinel one after another.

Ladle Slide Gate Plate:Slide gate plate is preferred products for big/medium ladle and continuous casting tundish. Alumina-carbon slide gate plates can meet the requirement of different steel grades.

Ladle Castable:Ladle castable has good workability, high strength, good volume stability, good abrasion resistance and thermal shock resistance, etc.

Article Source:The four most common damage mechanisms of magnesia carbon brick Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products:https://www.cxrefractories.com/en-product-solution Email:info@cxrefractories.com Website:https://www.cxrefractories.com

[xinmichangxingrefractory-blog]

Influence of Refractory Materials for Ladle Leaking

Slide gate refractory part is a central part of the slide gate, is a key component in direct contact with the control of molten steel, its physical and chemical properties is a key factor in determining whether the normal use of the sliding gate.

1.Ladle well block is of low hot crushing strength. When using air pick to chance upper nozzle well block, the well block would be easy to breakdown. The inner diameter would get larger, and gap between well block and upper nozzle may get bigger. The molten steel would easy to get into the gaps, and leak would easy to happen.

2.Ladle well block is of weak thermal resistance. During working period, like casting and hot repair, the temperature difference would be very big, and the well block would easy to break down. If can not be found in time, molten steel would leak through the gap between upper nozzles well block and nozzle.

3.Ladle sliding gate plate is of weak erosion resistance. When doing half hole casting, the lower plate would bear higher erosion strength, and easy to appear groove. After closed the plate, molten steel would leave in the groove and get cold there, in which way the two plates can not work smoothly.

4.If the low sliding gate plate break down, gap would easy to appear when casting, and molten steel would leave through it. If terrible, the sliding gate plate would easy to break into pieces because of molten steel pressure. 5.Sliding gate plate mortar can not bear erosion well, in which way gaps would appear and cause leak. If can not be found in time, this would cause leak between upper nozzle well block and well block, upper nozzle and upper sliding gate plate.

Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.

Article Source：Influence of refractory materials for ladle leaking Company name:Henan Xinmi Changxing Refractory Materials Co.,Ltd Email: sales1@chinafirebrick.com Website:http://www.chinafirebrick.com/

[xinmichangxingrefractory-blog]

Sliding gate damage theory and meaning of conjunction

Ladle slide gate plate mainly contains two types, alumina carbon and alumina zirconium carbon. With steel production increasing and steel quality improving, calcium treatment process is applied, therefore, calcium content in the melton steel increased. Using alumina carbon and alumina zirconium carbon slide gate plate when casting steel, SiO2 and Al2O3 in the slide gate plate would mixed with Ca, CaO in the melton steel or slag and get into low-melting point materials and feldspar, which would cause damage of slide gate plates. This type low-melting point materials would be easy to crushed down by erosion, new low-melting point material would re-appear. This progress would cause the erosion heavier, in which way the ladle slide gate plate would be damaged gradually.

Conjunction of slide gate plate can reduce the number of turnover ladle,?low down?ladle serves and turnover pressure.?In addition, ladle slide gate plate conjunction can low down labor working, improve ladle lining temperature, thus low down casting temperature and bring a number of benefit for production and reducing cost.

From Year 2008, our factory succeed to develop double conjunction and from Year 2010, triple conjunction is developed. With the triple slide got into the normal production, on-site production, reduce labor intensity, the effect of reducing the cost of generation is very obvious.

Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.

Article Source：Sliding gate damage theory and meaning of conjunction Company name:Henan Xinmi Changxing Refractory Materials Co.,Ltd Email: sales1@chinafirebrick.com Website:http://www.chinafirebrick.com/