Considering the different physical and chemical properties between magnesium granules and calcium carbide powders , the thermodynamics , mechanism and kinetics of desulphurization in hot metal by magnesium injection were mainly discussed 鉴于金属镁粒和碳化钙粉这两种脱硫粉剂的物理和化学性质有着本质的区别，作者重点分析研究了镁粒在脱硫过程中的热力学、反应机理和动力学。
Among them , the calcium carbide , dicyanamide and white carbon black are being exported to japan , west europe , saudi arab , south korea and southeast asia , earning 4 million u . s . dollars of foreign exchange annually . the company has a strong technical force work 企业部分产品电石三聚氰胺双氰胶白炭黑等产品出口日本西欧沙特韩国和东南亚等国家和地区，年创汇近千万美元。
The annual production of calcium carbide is 35000 tons , the annual production of ferrosilicon is 12 , 000 tons , realize the income from sales of 117 , 600 , 000 yuan annually , realize the profit of 17 , 430 , 000 yuan annually , excellent grade rate for calcium carbide is more than 95 % 公司电石年产量35000吨，硅铁年产量12000吨，年实现销售收入11760万元，年实现利润1743万元，电石产品优级品率为95以上。
About mixture rate of calcium carbide dust stabilization and calcium carbide dust s mixing dose , controlling methodand construct technics , we conduct large number of indoor tests and outdoor tests and educe scientific datas and methods 对于电石灰稳定土、电石灰二灰土和电石灰二灰稳定级配碎石的配合比以及电石灰的掺和剂量、控制方法、施工操作工艺等都做了大量的室内、室外试验，得出比较科学的数据和方法。
Coke powder is reasonably utilized , our calcium carbide product can obviously reduce powder consumption and reduce the cost without much changes on the quality target of the products ; meanwhile it can also lengthen the life span of the furnace and improve the operation environments 焦炭粉末得到合理利用，电石产品在质量指标基本保持不变的情况下，电耗明显下降，降低了成本；同时也达到延长了炉龄，改善了操作环境。
Paste products have broad applications , such as the electrode paste , which can be used as the electricity - conducting materal in the sumerging ? arc furnace for producing calcium carbide and ferroalloy , and the anode paste , which is used as the electriciyt - conducting anode in aluninum electrolysis cell 糊类产品用途广泛，其中电极糊可作为自培电极在生产电石、铁合金的矿热炉上作导电材料，阳极糊可作为铝电解槽的阳极导电材料。
Gas producer is widely used in forging , smeltingmetallurgical , heat treatment and drying equipment industryetc . suchas ： glass fumace , linme kiln , pottery kiln enamel , scouring pui kilns , chemical and refractory kiln , ferrosili - cin calcium carbide fumace and annealingkiln , etc 煤气发生炉广泛用于锻造、熔炼、冶金、化工、热处理、烘干设备等行业，如：玻璃炉窑、石灰窑、陶瓷窑搪瓷、精炼培烧窑、化工和耐火材料窑、硅铁电石炉、退火窑等。
We can use both calcium carbide dust and calcium carbide dust - flyash to stabilize fine - soil . as well as being used in subbase of high grade road , calcium carbide dust stabilization and calcium carbide dust - flyash stabilization can be used in basecourse of low grade road . so we can deduce that calcium carbide dust - flyash - gravel stabilization can be used in basecourse of high grade road 我们可以利用电石灰来稳定细粒土，利用电石灰和粉煤灰来稳定细粒土。通过数据分析，这种电石灰稳定土和电石灰二灰土完全可以刚于高等级公路的高级路面的底基层，也可以用于低等级公路的路面基层，同时推断，用电石灰和粉煤灰来稳定的级配碎石，可用于高等级公路的路面基层。
China haohua group corporation xuanhua co . , ltd is a large scale corporation which was established by xuanhua chemical plant xiahuayuan calcium carbide plant xuanhua chemical fertilizer plant based on china haohua group corporations requirements of supernormal practice development strategy and zhangjiakou municipalitys guiding principal of city development depending on industry ”发展战略和张家口市“工业立市”方针要求，由原中国昊华化工集团宣化化工总公司张家口市下花园电石厂与河北宣化化肥集团有限公司出资组建的大型法人实体。
The annual productive capacity of the major products are : 13 . 8 thousand tons of melamine , 400 thousand tons of urea , 100 thousand tons of calcium carbide , 4000 tons of dicyanamide , 11 thousand tons of white carbon black , 10 thousand tons of edible liquid co2 , 20 thousand tons of calcium cyanamide , 30 thousand tons of methanol , 10 thousand tons of formaldehyde , 50 thousand tons of n . p . k . compound fertilizer , 200 tons of guanidine nitrate and 500 tons dissolved acetylene . the calcium carbide is the fine quality product awarded by the state 主要产品生产装置能力为：年产总氨28万吨，实物尿素45万吨三聚氰胺1 . 35万吨精甲醇3万吨食品二氧化碳1万吨电石10万吨石灰氮2万吨双氰胺4000吨溶解乙炔500吨甲醛5万吨白炭黑1 . 2万吨热电厂装机容量3 . 6万千瓦，年发电3亿千瓦时，供热450万吉焦耳机械厂年机加工量2000吨综合厂复混肥5万吨。
