Dear sir or madam ,
We are Tianjin Xinhaojin Chemical Co.,Ltd,who are manufacturing chemical raw materials and export .We are producing Calcium carbide carbon black lithopone, titanium pigment etc., as time as runing Sodium sulfide,Causticsoda for many chemical raw materials .
As our products are high quality, so they are in good market of many countries ,such as India , South America and European .If you are interested in our products, please don't hesitate to let us know.
We are looking for your reply.
Calcium carbide: Calcium carbide is produced industrially in an electric arc furnace from a mixture of lime and coke at approximately 2000 °C. This method has not changed since its invention in 1888:
CaO + 3 C → CaC2 + CO
The high temperature required for this reaction is not practically achievable by traditional combustion, so the reaction is performed in an electric arc furnace with graphite electrodes. The carbide product produced generally contains around 80% calcium carbide by weight. The carbide is crushed to produce small lumps that can range a few mm up to 50 mm. The impurities are concentrated in the finer fractions. The CaC2 content of the product is assayed by measuring the amount of acetylene produced on hydrolysis. As an example, the British and German standards for the content of the coarser fractions are 295 L/kg and 300 L/kg respectively. Impurities present in the carbide include phosphide, which produces phosphine when hydrolysed.