Yixing Keqiang Special Ceramics Co., Ltd. adheres to the tenet of customer first and service first, and provides various special refractory products for domestic and foreign kiln application enterprises. The special refractory materials developed by our factory are widely used in refractory brick production, steelmaking enterprises, Kind of hardware manufacturing, chemical industry, daily ceramics, building materials and other industries, with a professional kiln construction team, hotline: 13585042015

Production process of refractories

Depending on the compactness and shape of the product, refractory materials include sintering, melt casting and melt blowing. The sintering method is to pre-burn the mature material, crush and screen it, and mix it with the raw material according to a certain proportion, and then shape, dry and fire it. The purpose of raw material calcination is to burn off the moisture, organic impurities, and sulfate-decomposed gases in it to reduce the burning of products.

By admin Browse Release time2015-10-22 18:25

Production process of refractories

Depending on the compactness and shape of the product, refractory materials include sintering, melt casting and melt blowing. The sintering method is to pre-burn the mature material, crush and screen it, and mix it with the raw material according to a certain proportion, and then shape, dry and fire it. The purpose of raw material pre-firing is to burn out moisture, organic impurities, and sulfate-decomposed gases, so as to reduce the firing shrinkage of the product and ensure the accuracy of the product's overall dimensions. The raw materials need to be sieved after being crushed and ground, because the blanks are graded by powders with different particle sizes, which can ensure the closest packing and obtain a compact green body.
In order to homogenize the ingredients and granules of various raw materials and clinkers, kneading is performed, and a binder is added at the same time to enhance the bonding strength of the blank. For example, aluminum silicate material is added with bound clay, magnesium material is added with sulfite pulp waste liquid, and silicon material is added with milk of lime. According to the water content of the blank, semi-dry molding (about 5% moisture), plastic molding (about 15% moisture) and grouting method (about 40% moisture) can be used. It is then dried and fired. The melt casting method is a process in which the raw materials of the refractory material are blended and finely ground, melted at a high temperature, directly cast, and cooled to crystallize and annealed into products. Such as fused mullite brick, corundum brick and magnesium brick. Their green bodies are dense, have high mechanical strength, high temperature structural strength, good slag resistance, and the scope of use is constantly expanding. Melt blowing method is a method in which ingredients are melted and then blown with high-pressure air or superheated steam to disperse them into fibers or hollow spheres. Products are mainly used as lightweight refractory and thermal insulation materials. In addition, it can also be made into powder or granular amorphous refractory materials. When used, it is cemented with binders such as tar, asphalt, cement, phosphate, sulfate, or chloride, and used directly without molding and sintering.
耐火材料 有限公司专业生产以下产品:各类 耐火板 承烧板 推板 棚板 硼板 匣钵 坩锅 电瓷 耐火砖 耐火 材料,各类 碳化硅 三明治 氧化 刚玉 氧化锆 高铝 堇青石 莫来石 浇注料 耐火 产品,详细了解或者咨询 耐火 材料 信息请联系(汪勇:13585042015 QQ:24699159 微信号:bianluo) Yixing Refractories Factory Yixing Keqiang Special Refractory Co., Ltd. specializes in the production of the following products: various types of refractory materials such as refractory plates , burn-in plates , push plates , shed plates , boron plates , box bowls , crucibles , electric porcelain , refractory bricks, etc Refractory products such as silicon carbide , sandwich , alumina , corundum , zirconia , high alumina , cordierite , mullite , castable, etc. For more information or to consult refractory information, please contact (Wang Yong: 13585042015 QQ: 24699159 WeChat: bianluo)