Refractory Manufacturer

Materiais refratários devem ser química e fisicamente estáveis ​​em altas temperaturas. Devem ser resistentes ao choque térmico, quimicamente inertes e ter faixas específicas de condutividade térmica e coeficiente de expansão térmica. Materiais refratários são úteis para as seguintes funções: Servir como barreira térmica entre um meio quente e a parede de um recipiente; Resistir a tensões físicas e prevenir a erosão das paredes dos vasos devido ao meio quente; Protegendo contra a corrosão. Eles estão fornecendo isolamento térmico. Os refratários têm várias aplicações valiosas. Na indústria metalúrgica, os refratários são usados ​​para forrar fornos, fornos, reatores e outros recipientes que retêm e transportam meios quentes, como metal e escória. Os materiais refratários podem ser divididos em refratários ácidos, refratários básicos,

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Refractory FAQ

How is silicon carbide obtained?

Silicon carbide (SiC) is produced from coke and quartz sand applying the Acheson process in an electric resistance furnace. When petrol coke and quartz sand are grouped around a graphite electrode and heated to a temperature of 2,000°C, black and slightly higher-quality green SiC are obtained. Green SiC has a

What is grit size?

Grit size typically runs from coarse (16 -24 grit), medium (36 – 60 grit) and fine (80-120 grit).  Superfine grits run from 150 and higher.  Grinding wheels usually will be between 24 and 100 grit.  Honing stones and jointing stones and other polishing abrasives will be 150 grit and higher. 

What is mohs hardness?

Mohs hardness (according to Friedrich Mohs, 1773 – 1839) ascribes a relative hardness value to certain known minerals on a scale ranging from 1 (talc) to 10 (diamond). Accordingly, a mineral is considered harder than another if it can scratch the latter. Please note that these values merely form an

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