Fused cast AZS block concrete production process is as follows:

1. Preparation of molten zirconia corundum materials

Excellent performance of high purity zirconium corundum materials, weighing mixed together, so that the raw material properties are fully utilized. Materials, weighing mixed together, so that the full use of raw material properties.

2. Molten zirconia corundum

Will be combined with the molten zirconia corundum material into the electric arc furnace with automatic control, under the best conditions of melting. With single-phase or three-phase arc furnace melt temperature should be moderate, bulk low temperature will not form a highly uniform melt, easy to form porous body castings, so that the melt castings produce pores and cracks, shrink a corresponding increase in product formation Of the contraction chamber.

3. Pouring

Molten material specially designed injection mold products. Casting the dense structure and the use of good performance of the fused brick. Through the appropriate hot-melt casting, cast zirconium corundum bricks shrink cavity concentration, dense area thickness increases, the product density also increases. However, when the superheat is high, although the melt density increases, the product forms cracks and large shrinkage.

4. Annealing

Casting good bricks and slow cooling, the zirconium corundum block from the crystal growth to form the best structure.(http://www.fusedcastazs.com/fused-cast-azs-block/1.html)

5. Surface treatment

The use of precision machining equipment, so that products Fused cast AZS block processing in line with the design requirements of the precise size. Mechanical processing can improve the quality of molten brick, extending its service life.

6. Check

Each cast AZS block is a strictly visual inspection and shall be carried out in accordance with the contract standard.

7. Physical and chemical analysis

According to the requirements of the contract control engineering, the physical and chemical analysis of the molten brick.

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Ceramic fiber blanket is the clay clinker of high purity, alumina powder, silica powder and other raw materials melting in high temperature furnace, forming fluid. Fiber cotton can be further processed into fiber blanket, board, paper, cloth, rope and other products. Turn out to be an efficient heat insulation material, with the characteristics of light weight, high strength, oxidation resistance, low thermal conductivity, good flexibility, corrosion resistant, small heat capacity and sound insulation, etc.

Ceramic fiber blanket made from ceramic fiber as the raw material, in recent years become each big kiln dedicated furnace lining materials, because of its simplicity and easy construction, and heat insulation effect is better, become a required insulation material of kiln company. The adiabatic temperature can reach more than 1600 degrees, greatly satisfy the needs of the user.

Energy shortage, various cost increase, are the necessity of industrialization process, has the construction application of the energy-saving insulation materials, for the enterprise, it is the top priority in development, ceramic fiber blanket improves the conservation of thermal efficiency, but for some special kilns, due to the particularity of chemicals, may temporarily can't use ceramic fiber blanket as insulation materials.

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Thetypical applications of ceramic fiber blanket

1. Aerospace, steel,petrochemical, electric power of high temperature heat insulation

2. Equipment fireinsulation

3. Industrialfurnace, heating device wall lining, backing insulation

4. High temperature equipment insulation, heat pipe heat insulation

5. Electrical components heat insulation fire, high temperaturegaskets

6.Inorganic fireshutter fire-resistant layer

7. Module, folded pieceof raw materials

Technicalcharacteristics:

Low thermalconductivity, low thermal capacity

No corrosivesubstances

Excellent heatinsulation, sound-absorbing

Range of application

Industrial buildingmaterials furnace, heating equipment, high temperature pipe wall lining

Power boiler, steamturbine and nuclear heat insulation

High temperaturereaction chemical industry equipment and wall lining of heating equipment

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Inuse process of refractory material, due to a variety of differences ofenvironment, a variety of requirements are proposed on the performance ofproducts, whether to meet the requirements of performance indicators, becomethe main measure standard of the quality of refractory products, and alsoprolong its service life, improve the important basis of use value.

Refractoriness

Refractorinessis refractory material resist to high temperature function rather than meltingperformance, its meaning of refractoriness and melting point are different,melting point is refers to the crystalline phase and liquid phase of puresubstance is in equilibrium temperature. And general refractory materialis multiphase solid mixture composed of a variety of mineral, has nouniform melting point, but began to produce liquid phase under certaintemperature, with temperature rising, the liquid phase ratio increasescontinuously, to a fixed temperature, solid phase can all melt for the liquidphase. Between the two fixed temperature range, both liquid phase andsolid phase exist at the same time.

Thechemical composition, mineral composition and its distribution of refractoryproducts are the most basic factors to influence therefractoriness. Impurity elements with strong solvent effect, willseriously reduce the refractoriness of products. Uneven distribution ofcomposition that cannot form an ideal high melting point mineral,will lead to lower refractoriness products, so damage the using performance ofproducts, but the refractoriness of products doesn't mean its use temperature,because refractory material in use, processes through high temperature functionat the same time, often with the solvent effect of load and external things andso on. Actually allowable working temperature is much lower thanrefractoriness, but, after all, the refractoriness index is one of theimportant reference frame to select reasonably refractory material.

Refractorinessunder load

Therefractoriness under load of refractory material, also known as the hightemperature load deformation temperature, defined as refractory products underpersistent overheating conditions, bear deformation temperature under constantload. It said the refractory products at the same time resist the abilityof high temperature and load effect.

Linearchange on reheating

Linearchange on reheating, also known as residual linear change, refers to after therefractory material heated to high temperature, happens the irreversiblechanges of its length. The specific definition is refractory products sampleheated to the specified temperature, heat preservation time, after cooling toroom temperature, the length produce residual expansion or contraction.

Thermalshock resistance

Refractory materialin use process, the environment temperature change isinevitable. Sometimes it is even very sharp change, for example, inmetallurgical operation, the brick, flat, furnace charging, heating up,the furnace temperature in the steel, etc.

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The use performance ofcorundum brick refers to the corundum brick has the performance when used inhigh temperature. Including refractoriness, refractoriness under load, linearchange rate, thermal shock resistance, slag resistance, acid resistance, alkaliresistance, oxidation resistance, resistance to hydration and CO erosionresistance, etc.

1.Increase therefractoriness.

Refractorinessrefers to corundum brick with non-melting performance under resistance tohigh temperature. Refractoriness is the basis fordetermining material whether can be used as a refractory brick. Theinternational standardization organization stipulates above 1500 refractoriness of inorganic non-metallic materials is the refractory material.The significance of refractoriness and melting point is different. Can nottake refractoriness as the use of corundum brick temperature. Thebasic factor of refractoriness to decide is chemical mineral compositionand its distribution of corundum brick.

2.Increase the refractoriness under load.

Corundum brickrefractoriness under load refers to the products bear constant load deformationtemperature under thecondition of rise temperature. It shows corundum brickthe ability of resistance to high temperature and load effect, to a certainextent, indicates that products in the similar conditions of use case structurestrength. The major factors that affect corundum brick refractoriness underload is the chemical mineral composition and microstructure. To improve thepurity of raw materials, reduce the content of low melting or flux, increasethe molding pressure, made of high density of bricks, can significantly improveproducts refractoriness under load.

3. Improve the thermalshock resistance

Thermalshock resistance refers to the corundum brick with damage resistanceperformance to the temperature change rapidly. Generally speaking, the thermal expansion rate of corundum brick isgreater, thermal shock resistance is worse. The thermal conductivity ofproducts is higher, thermal shock resistance is better. In addition, theorganization structure and grain composition shape and other productsof corundum brick have effect on the thermal shock resistance.

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Fire Clay brick is used inconstruction of artificial small piece of material, is one of the world'soldest building materials. With clay (such as shale, coal gangue powder) as themain raw material, passthrough sludge processing, molding, drying and roasting completed. The main raw material of fire clay brick is nature or sandy clay,its main chemical composition is SiO2, Al2O3, Fe2O3 and crystallization water,because of the different geological formation conditions, may also contain asmall amount of alkali metal and alkaline earth metal oxides. The productiontechnology of fire clay brick mainly includes soil, mud, blocking, drying,roasting, etc.

Theadvantages of fire clay brick:

1.Fire clay brick shows weakacid under high temperature, alkaline slag erosion resistance is a bitpoor, but enhanced with Al2O3 content increase, and the thermal stability thansilica brick, magnesia brick as well.

2.The blast furnace fire clay brick of quality qualification goes through dryingtreatment, vacuum impregnation phosphate, secondary low temperature firing of phosphateimpregnation products, can be used for laying on blast furnace lining.

3.Fire clay brick use local materials, cheap price, durable, and fire prevention,heat insulation, sound insulation and absorption of moisture, widely used incivil instruction engineering, waste brick bat also can make concreteaggregate.


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The protectionof the commonly used refractory material has several aspects:

1.Lining cooling

Accordingto the cooling intensity, it will have effect on the life of refractory brickaccording to all kinds of mechanism. Cooling system is divided intoslagging layer and gradient of slagging, the work surface temperature isdecreased obviously, and has helped the water-cooling system on a certainlevel, the equivalent of refractory material and erosion of the interaction ofsolid state and liquid state product are balance, or cause formation ofslagging layer conditions. Gradient, furnace temperature of refractory material is still the same, andapproximately equal to the furnace space temperature, the temperaturereduction of cold face, so that the lining increases accordingto the thickness of the temperature gradient, and at a specified level, duringfurnace use in a certain period for the water cooling system.

2.The gunning of refractory material lining

Onmany occasions, gunning can obviously increase the lining life. Develop gunning(cover) can calculate lining with new sludge (by model) pouring used partwithout damage. Save raw materials.

3.Reducing erosion of eater

Refractorymaterials using slag erosion is one of the factors. The contact time of slag and refractory material is thelonger, the lining damaged is the larger .Test showsthat the ladle lining damage and the thickness of slag layer actuallyhas a linear relationship.

4.Prescribed temperature andgas system quota

Temperatureand oxygen of steelmaking production, these important enhancer value, in thefinal analysis depends on the economic calculation. The most suitable value ofthe data carries with the nature of the compromise.

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Firstly,the most basic is that the nature of silica brick belongs to acidity.

The true density of silicabrick is the smaller, the lime change is the more complete, in the process ofthe oven, generated residual expansion is the smaller. In silica brick,the true density of tridymite crystal is smallest, the linear expansion rate issmall, the thermal stability is better than quartz, thermal conductivity isgood, refractoriness under load is high, slag corrosion resistance is strong,is the most stable volume form in quartz. In good firing silica brick, thecontent of tridymite is the highest, accounted for 50% ~80%. Cristobalite takes second place, only accounted for 10% ~ 10%.The content fluctuation of quartz and glass phase is in 5% ~ 5%.

When working temperatureis below 600 ~ 700 ,silica brick volume change is bigger, the resistance to thermal shockperformance is poor, thermal stability is not good. If the long-term workunder the temperature of coke oven, masonry is easily broken.

Thekey to determine whether thermal stability of silica brick is true density, thesize of true density is to determine one of the important marks of the quartz.

Silica brick is the idealrefractory products of coke oven, the important parts of the modern large andmedium-sized coke oven (such as the combustion chamber, ramps and regenerator)all use silica brick to build.

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Sillimanite brick is refractory brick made of sillimanite minerals.Commonly using high temperature burning method and mud casting method to produce.

Sillimanite brickhas five big advantages of using:

1. The applicationof non-ferrous metal smelting industry

Use silicon carbid,high temperature resistance, big strength, good heat conduction performance, impactresistance, high-temperature indirect heating material, such as strong retortfurnace. Distillation furnace tray, aluminium electrolyzer, copper meltingfurnace lining, furnace zinc powder with arc plate, the thermocouple protectiontube, etc.

2. The applicationof iron and steel industry

The use of silicon carbide corrosion resistance. Thermal shockresistance to wear and tear. Good characteristics of thermalconductivity, for large blast furnace lining to improve the service life.

3. The applicationof metallurgical mineral processing industry

Silicon carbidehardness is second only to diamond, strong wear resistance, is wear-resistingpipe, the impeller, pump room, cyclone, ore bucket lined with ideal material,its wear resistance is 5 to 20 times than the service life of castiron,rubber, is one of the aviation flight track ideal material.

4. The applicationof building materials ceramic, grinding wheel industry

Usingthe coefficient of thermal conductivity. The characteristics of thermalradiation, high strength, manufacturing sheet kiln furniture, not only canreduce the capacity of kiln furniture, also improves the loading capacity ofthe kiln and the product quality, shorten the production cycle, is the idealindirect materials of ceramic glaze baking sintering.

5.The application ofenergy saving

With good thermalconductivity and thermal stability, heat exchanger, burnup decreased by 20%,saving fuel by 35%, to improve productivity by 20-30%.

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Nowrefractory material industry in our country exist many problems, these problemshave already become a stumbling block to enterprise survival and development.Only take temporary solution and effect a permanent cure to solve the problemsexisting now, only innovation can survive and develop.

Environmentalproduction, green manufacturing

Environmentalprotection is the industrial production has been facing the problem, in orderto reduce the pollution of the environment, our refractory enterprises respondto the national policy to conduct coal to gas, only these are not enough, greenmanufacturing is feature of the new refractory materials production, reduceconsumption, recycling, reduce resource consumption, reduce environmentalpollution, to achieve sustainable development.

Quality assurance,first-class service

Our country'srefractory materials account for the world's first production, we need to do isto improve the quality of our products, product high middle-grade products, tomake the stability and quality of products are better, refractories enterprisesin good quality as well as perfect service.

Internet andRefractory materials

The emergence of theInternet has opened up a new sales channels to refractory enterprises, at thesame time also bring many problems to refractories enterprises, how to do howto do e-business, how to make own products for more buyers to seethrough the Internet.

Now this is not a problem, you can choose our refractory factory networkplatform, we are committed to doing all refractory material industry chainservice provider, specially build the electric business platformto refractory enterprises, make refractory enterprises more quicklyconnect with the Internet, realize the Internet and refractory material transformationand upgrading.

Refractory materialsales hold good market, meet the demand of buyers, to provide high qualityservice.

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