Raw material of quartz sand and dry refractory cement preparation

The coreless induction furnace is many domestic foundry enterprises melted iron, non-ferrous metals or main insulation equipment for processing molten metal, the refractory cement lining is quartz dry ramming mass. The quartz sand raw material requirements, dry material preparation, furnace lining life to explain influence factors such as baking and the use of.
Raw material of quartz sand and dry refractory cement preparation
Not all of the raw materials of quartz sand natural quartz sand can be used as lining materials of induction furnace, as lining material of quartz sand, have special requirements on the chemical composition and crystalline state.The chemical composition requirements of quartz sand are as follows: SiO2 content should be greater than 98%, preferably for the; alkali metal oxide (K2O, Na2O) content should be less than 0? 02%, the less the better; Fe2O3 content is the best.The microstructure of natural quartz sand has 2 kinds: crystalline; cemented. As lining material of quartz sand must be crystalline and crystalline size, the bigger the better. The crystal size is divided into 3 levels: the crystallization, crystallization of small crystals.Raw material of quartz sand and dry refractory cement is as a lining material to the crystallization of hope, will change the crystal type of quartz sand in the heating process, volume expansion.Coarse quartz in crystalline structured low energy state, it happens to crystal transformation requires high energy, high temperature. When the temperature is high, the more dry material in liquid phase, then the volume expansion of liquid will be absorbed, and will not produce the lining damage.From the above, as lining material of quartz sand, crystal should be thick, high purity quartz sand. We have found that the crystal size of >2mm for high quality quartz sand source 95% and SiO2 content of 99%, and has been used in a lot of preparation of dry lining refractory cement.Taurus is such a high quality quartz sand, silica sand, quartz grain size larger than all 2mm, and crystallization of relatively intact, the stress and deformation pattern is not obvious, from a structural point of view, has experienced two times of recrystallization, the individual quartz has less than 2mm cleavage better, and the structure is uniform.

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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