Monolithic refractories refractory castable classification and applications
Monolithic refractories by a certain grain size distribution of refractory aggregate refractory cement and powder, binder and additive mixture of refractory materials refractory cement , also known as particulate refractories. Used for lining thermal technology equipment, without burning process, baking use directly.
Compared with refractory brick, with simple process (due to save firing process), energy saving, low cost, is advantageous for the mechanized construction, etc.
In some thermal devices use effect is better than brick. According to the construction method and material properties of monolithic refractories can be divided into refractory castable, plastic, ramming mass material/refractory cement, gunning materials, casting materials and coatings, etc. After a water mixing refractory castable material has a good liquidity. Should be properly maintained after forming, make the setting and hardening, according to a certain system can be used after baking. Refractory castable with aluminum silicate clinker, just the quality of the jade material or alkaline refractory clinker refractory cement as aggregate; Lightweight refractory castable with expanded perlite, vermiculite, ceramsite, alumina hollow ball to aggregate. Binder with calcium aluminate cement and sodium silicate, silicic acid ethyl ester, polyaluminium chloride, clay or phosphate, etc. Admixtures depending on the usage, the effect is to improve the construction performance and improve the physical and chemical properties.
Construction of refractory castable shaping methods vibration method, pump injection, injection, injection method, etc.
 Made the whole lining refractory castable, often also used with metal or ceramic anchorage. If adding stainless steel fiber reinforced, can improve the mechanical vibration and thermal shock resistance. Refractory castable used for all kinds of heat treatment furnace, ore roaster, catalytic converter, such as conversion furnace lining, also used for melting furnace and high temperature melt flow channel lining, such as lead and zinc smelting furnace, tin bath, salt bath furnace, steel or iron tank, ladle, liquid steel vacuum recycling degassing device suction nozzle, etc.
But plastics has the plasticity of the sludge or mud slab. Applying appropriate external force, easy deformation, not cracking; After stress relieving, no deformation. Plastic material has half silica, clay, high aluminum, zircon stone, carbon, etc., there is also a lightweight plastic. Plasticizing must be added plastic materials, plastic materials mostly high plasticity clays, plasticizer can also be used to improve the plasticity of the clay. Plasticizer with carboxymethyl cellulose, dextrin, lignin sulfonate, etc. Can be used in the plastic binder have plastic clay, phosphate, aluminum dihydrogen phosphate, aluminum sulfate, etc. With phosphoric acid or phosphate binder and the oxidation of aluminum plastic, save will react with alumina in the process, generate insoluble orthophosphoric acid aluminum and make the mud material hardening, so to add preservatives, such as oxalic acid, citric acid, acetyl acetone, etc
Ramming material adopts the forced ramming, low porosity, high density, therefore, in monolithic refractories, ramming material is especially suitable for melting furnace lining and the lining of a variety of containers of high temperature molten metal. Such as open hearth and electric furnace hearth, all kinds of induction channel furnace, blast furnace iron groove, ladle, etc. Gunning material for jet a refractory gunning or spraying with the mixture. By gunning method can be divided into wet gunning (or gunning mud method), half dry gunning and fire flame gunning. Wet gunning with the aid of compressed air spraying send refractory powder containing 20 ~ 40% slurry, can achieve higher fog, high sticking rate and can be a uniform thin layer patching. Half dry gunning is wet by compressed air and water in the nozzle spray of refractory powder, water content of 11 ~ 14%, the adhesion rate is low, can be gunning for thicker layers. Fire gunning to dry gunning, gunning materials to fuel - in the flame of oxygen lance, gunning materials in nozzle flame partial melting and adhesion on the brick lining.

Taurus Refractory ramming mass Factory mainly engaged in professional manufacturer of development, production and sales of the refractory mixture such as melting copper, aluminum and zinc furnace lining. And supply castable refractory for copper smelting, ramming mass for molten copper,fire clay,refractory mortar, refractory cement ,refractory mixture, refractory concrete and silica sand for copper smelting.
Website: http://www.jnrefractory.com  
Contact: Mr. Niu
Tel: +86-371-64372566
Fax: +86-371-64372588
Mobile Phone: +86-15137151612
Email: info@jnrefractory.com
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