Refractory castable material inspection before construction

Construction of casting material before should strictly check the following:

    1. Casting material construction is made of steel or hard wood templates are available. The template must be of adequate strength, good rigidity, not out of shape, do not shift, no leakage of slurry. Steel template to mold release agent. Wood template to brush waterproof paint. The repeated use of the template to cleaning, painting can be used.
    2. Water, pouring material should be strictly according to the manual control, shall not exceed the limit. Under the premise of ensuring the construction performance, the amount of water should be less than.
    3. Castable refractory mixing time should not less than 5 minutes. The operation to the use of forced mixer. Mixing should first dry mix, then add 80% dosage of water mixing, and then depending on the extent of wet and dry, gently stir until the remaining water, obtaining suitable work consistency so far. Stirring casting material different should first mixer clean.
    4. Pouring material must use the whole barrel bag full of. Stirring casting material generally good must be used within 30 minutes. Drying at high temperature working environment should be appropriate to shorten this time. Already first castable coagulation even caking not poured into the mould, nor of mixing water reuse.
    5. If the project inspection unqualified should deal with qualified rear can construction. Expired materials shall not be used. Construction of castable to ensure that no power outages not interrupted construction.

How is the castable development prospect

    For some want to do industry castable but very hesitant people, who are considering how is industry castable prospects, technical staff of Xinmi Changxing today to give you an answer.

    In fact, choose industry castable shows that you are still very eyes, because the development prospect of the castable is very broad, whether can use castable in what place, so it can be said is the choice of castable is not wrong; there is the prospect of castable is good but also because of their condition outstanding, first of all the first is the castable high-temperature considerable, so whatever is great in the iron and steel factory or in the furnace of the demand, and the use of many places, development benefit will be relatively good many; and then pouring material and long service life, unlike the ordinary refractory material, we did not take long for the index has declined step by step, to bring certain influence to our production and work efficiency, problems like this we can choose castable. But like the petrochemical industry are large enterprises to use castable, the future development has brought great benefits, so in general the development prospects of castables is very good.

    The content of the development prospects of castable maybe you have some understanding of it, if you want to ask more about castable knowledge can consult us freely.

Prospects of refractory castable products

             Refractory castable as a very practical refractory material, it is very important in the status of the industry, at the same time, in our country also cannot lack the existence of this product, and now with the development of our country more and more quickly, need of castable refractory industry is also growing, so that the production of domestic enterprises have been constantly emerging. So from this we should be able to predict, in the future this kind of refractory products in the market is affected by many users and consumers and other industry's attention, but also bring great use for the development of our country.

            Nowadays with the rapid development of refractory castable, many new species are also in the constant increase, but this does not mean that the quality of the products is not guaranteed, but with the increase in varieties, the quality of the products also increased, many more new refractory raw materials have also been developed. My company is a very advanced technology enterprises, and many years of production experience, is worthy of the trust of the people, but also very quality assurance. If people want to have the quality and safety assurance of castable refractory products, welcome to our company for purchase.

            Now that the castable refractories market so well, so my company in the market prospects will be very broad, when people focus on the industry and the products of the enterprise, we will let consumers with special respect.

Ladle Castables,Castsable Refractory,Refractory Material,Refractory Mortar

Ladle Castables

Introduction:

Based on low-cement castable and superfine powder technologies, our company developed the series of castables for ladles to meet the operation conditions of various ladles. The castables are made by setting up scientific optimization of ingredients and accurate distributing of grain size as well as adding of high-quality binding agents and high-efficiency external reactants.

 

Ladle Backing Layer Castables,Ladle Castable

Ladle Backing Layer Castables

Large ladle mostly uses magnesia-carbon brick and alumina-magnesia-carbon brick. There is also a layer of 90-110mm castable that is backing layer castable.

Light-weight Insulating Castables for Heating Furnace

Light-weight Insulating Castables for Heating Furnace

 

Introduction

Our company manufactures and supplies superior quality range of Insulating Castable that is a light weight refractory concrete. We provide pre-cast and fired castable at industry leading prices and these are widely used as castable for walls, roof and bottom of steel rolling heating furnace.

Light-weight Insulating Castables for Heating Furnace

 Light-weight Insulating Castables for Heating Furnace

This product mainly takes multi-hole clinker, floating ball, vermiculite and perlite as principal raw materials, and it is characterized by high strength, good heat insulation property and thermal shock resistance. It can be used as the heat-insulation castable on parts like furnace wall, top and bottom of various steel rolling heating furnaces.

Refractory Castables for Working Lining of Heating

Refractory Castables for Working Lining of Heating 

The castables, characterized by qualified flint clay, superfine aluminuma, fused alumina, sintered mullite, etc material and combined with micro mist, several additives. Its main character is good volume stability, good thermal shock resistance and high strength, widely used for heating furnace’s roof and wall of various types of steel rolling by casting.

Construction of Refractory Castable

During the construction of refractory castable, special attention should be paid on pin welding, asphalt brushing, stirring of castable with water, making and fixing of mould, vibration and ramming of castable, demoulding, sizes’ and measuring points’ accuracy, etc. http://www.yilongrefractory.comDo construction strictly as material manufacturer and boiler works required.

1. Installation of Pin and Claw Nails

Reinstall the pins missing for any reason and the pins in the area of heating surface composite melding junction before hydraulic pressure. Lengthen and reinstall the pins properly in coal mouth, material return mouth and upper inflection point of air duct furnace so that meets the required density of pins. Brush all the pre-buried metal parts and claw nails with asphalt paint (thickness > 1mm) or cover them with combustibles before casting.

2. Dosing and Stirring of Castable & Water

The dosing of castable and water should be done strictly as the instructions of material manufacturer. The water should be clean, such as drinking water, ph 6-8. The mixer should be clean forced action mixer, and clean it for the next time using. Pay attention on the adding order of castable and water and its stirring time, adding water freely and prolonging of stirring time are forbidden. The water and castable should be mixed evenly and stirred till smooth. Carry away the mixed casatble immediately after stirring, the castable poured out from stirring tank is disallowed to be poured into the tank and stirred again. Clean the tank after every construction for the next using, record the amount of water and castable, and the stirring time.

3. Checking Before Making Template

Check carefully whether the pin, hook nail and strutting part conform to the drawing, whether all the re-welding and is done and firm, whether the temporary metal parts have been cut off. Check whether the metal parts which should be brushed with asphalt paint meet the requirement, whether the casting place is clean, any other unrelated materials are forbidden to appear. For easy demoulding, a thin tier of partition (such as used oil) can be brushed in the mould. There can not be gaps between each two templates to avoid castable leaking out, so that also convenient for mould releasing. The refractory castable should be used up in 30 minutes after stirring, and should be casted to the required thickness in 1 time. Ram the castable till tight. For the too thick parts, cast tier by tier, while casting the upper tier, vibration bar can not touch the lower casted tier.

Casting of Backing Layer for Ladle Bottom (Construction Time: 1 Day)

Casting of Backing Layer for Ladle Bottom (Construction Time: 1 Day)

    Firstly, fix Permeable Brick and Ladle Nozzle Well Block, and then plug the inner hole with some resilient staff.

    Secoendly, weld some anchoring nails in the middle area of ladle bottom between one well block and another, the vertical and horizontal distances between every two anchoring nails are 25mm and 30mm.

    Thirdly, mix backing layer castable for ladle with about 5% of water, and then stir it for about 20 minutes till smooth.

    At last, pave the mixed backing layer castable at the bottom of ladle, and then vibrate it to 100mm in thickness by flat vibrator.

Casting of Backing Layer for Ladle wall (Construction Time: 1 Day)

    After maintenance of bottom permanent layer, stick a layer of high alumina fiber mat which is 10mm in thickness with the ladle shell. Then place the mould right in the middle, flat, no deviation. The mould surface should be clean, smooth and greased for easy demould.

    Lay the mould properly to ensure that the gaps between mould and sidewall are the same, then pour the mixed backing layer castable into the gaps, vibrate it by vibration bar till no bubble emerges(If mould is unavailable, cast working layer first and then permanent backing layer). The bottom of permanent backing layer is 100mm in height; vibrate 300-400mm per time, and its 90-100mm in thickness, then one circle by one circle till to the top.

    After vibration of permanent backing layer, lift the ladle to an area at higher temperature, so that it is convenient for water evaporation and drying of cast body. The time of demould should be more than 12 hours, usually 24 hours, specific time depends on lining harden situation.

Refractory Castables for Working Lining of Heating Furnaceng in heating furnace working

The castables, characterized by qualified flint clay, superfine aluminuma, fused alumina, sintered mullite, etc material and combined with micro mist, several additives. Its main character is good volume stability, good thermal shock resistance and high strength, widely used for heating furnace’s roof and wall of various types of steel rolling by casting.

 

Castable,Castable Refractry Cement,Insulating Castable,Fire Clay,Coating Material,Lining Materi,Ramming Mass,Silicon Carbide,Desulfurizer Refractory Material

Furnace Drying Tamp Mass

Introduction

Furnace drying tamp mass is prepared through selection of high grade synthetic raw materials, additive and binder. According to particle close packing theory. It is characterized by strong penetration resistance to molten steel, corrosion resistance, easy sintering, high packing density and easy installation. It is an ideal material for electric furnace bottom.

How to Build a Solid Arch Ceramic Kiln with Castable Refractory

How to Build a Solid Arch Ceramic Kiln with Castable Refractory

       Kilns can be built out of many things and castable refractory is one of the materials we rarely consider. Perhaps it should be considered more since the castable is reasonably priced, easy to mix, and easy to use.

      As John Britt explains in today’s post, if you are comfortable with casting plaster and making molds, you can handle building a solid arch kiln with castable refractory. – Jennifer Harnetty, editor.

Casting an Arch

     Determine the size of your arch and cut enough expanded polystyrene arch pieces to form the entire arch. Set it on four-inch “legs,” which can be dropped out after casting. Make the exterior wooden mold form by cutting two identical arch pieces out of 3⁄4-inch plywood that are longer than the foam arch by the thickness of the kiln wall. Establish the length of the kiln and cut three 2×4s to that length, attaching two to the bottom sides of the plywood arch forms and one at the top (the top 2×4 is visible in image #1). Fill this form with the polystyrene arches.

      Mix the castable, paying specific attention to the manufacturer’s instructions. You can use a commerical castable, Pryor-Giggey Phlocast 30 Low cement, and added Rib-Tec 400 1-inch stainless steel pins. Use approximately four pounds of steel pins per 100 pounds of castablerefractory. When mixing, wear a respirator and use thick gloves—the castable is caustic and the pins are sharp.

    Pour the castable in 4-inch-high sections made from 3⁄4-inch plywood strips so the castable refractory don’t bow, being sure to pack down and smooth out each section. Form a V-shaped groove at the top of each section and let the castable refractory harden. Separate each section with plastic wrap before repeating—the plastic creates an expansion joint. After the castable castablehas cured for 24 hours, take the outer plywood off and drop the legs out from underneath, allowing the interior expanded polystyrene forms to drop out.

Above ways just for your reference.

Types, Technical Properties and Application of Refractory Castable

Types of refractory castable
    Refractory castable mainly distinguished according to apparent porosity, anchoring agent, and types of aggregate. Besides that, refractory castable also classified according to applied temperate and functional characteristics when used. According to apparent porosity, it can be divided into compact refractory castable and adiabatic refractory castable whose apparent porosity is not less than 45%; according to anchoring agent, it can be divided to hydraulicity refractory castable, chemical constitution refractor castable and union refractor castable. The hydralicity refractory castable can harden in normal atmospheric temperature or by hydration, which mainly include portland cement, ordinary Calcium aluminate cement, pure Calcium aluminate cement and elect rometrical pure Calcium aluminate cement. The chemical constitution usually harden by adding curing agent to lead to chemical reaction in the normal atmospheric temperature, which mainly includes sodium silicate refractory castable, aluminum sulfate refractory castable and phosphate refractory castable. The union refractor castable turns to hard by sintering in the process of calcination, which mainly include Clay castable. According to refractory aggregate, there are clay aggregate (Al2O3 30%～45%),high aluminum aggregate (Al2O3%26ge;45%), silicon aggregate (SiO2%26ge;85%、Al2O3%26lt;10%), alkalin-ous aggregate (magnesite clinker and dolomite ) , special aggregate (carbon, carbide, spinel, zircon and nitride ) and adiabatic aggregate (pearlstone, vermiculite, ceramicite, floater, light brick sand, Porous clinker, and alumina hollow sphere). In the process of construction, it is available to use some mixture aggregate according to construction necessaries. Technical performances and applications of refractory castable
    Refractory castable as the main sort of unshaped refractory material, which can be used without fritting, besides that, among all he unshaped materials it with simple produce craft ship, needs no equipments, with high level of mechanization, easy to construct and with high coefficient of utilization. What’s more, refractory castable often have high intensity and can be made into fabricated material that used by furnace, for example, continuous casting weir plate preform which is pans available refractory castable.
     Refractory castable mainly used in casting industrial stoves, and also widely applied in fossil oil, chemical industry, electric power, mechanical industrial stoves, and thermal equipment.