中文摘要：

针对粉状原料-氧热法电石生产新工艺的需求,通过程序升温法研究了多种粉状含钙原料与粉状焦炭直接反应制备电石的过程。结果表明,升温过程中CaCO3释放的CO2、Ca（OH）2和电石渣释放的H2O对焦炭的量和质的影响很小,CaCO3、Ca（OH）2和电石渣均可直接用于电石生产,电石生成反应自1 450℃开始,1 740℃左右达到峰值。CaSO4与焦炭在920℃左右反应形成CaS,在研究的温度范围内CaS不与焦炭反应。

英文摘要：

To understand a novel process for preparation of calcium carbide（CaC2） from pulverized feed stocks,the reactions between a coke and various calcium compounds including calcium carbonate（CaCO3）,calcium hydroxide（Ca（OH）2）,residue from the reaction of CaC2 with water,CaSO4（the main compound in FGD residue） and calcium oxide（CaO） were examined in a TG-MS system up to 1850℃.The results show that all the calcium compounds,except CaSO4,can be used directly for CaC2 preparation,which starts at about 1450℃ and peaks at about 1740℃.The H2O and CO2 generated from the decomposition of the calcium compounds have little effect on CaC2 formation.At about 920℃ CaSO4 reacts with coke to form CaS,which does not react further with the coke in the temperature rang studied.