文章摘要
李文福,陈亚美.煤矸石作为替代原料在我公司水泥生产中的应用[J].水泥工程,2023,36(5):44-46
煤矸石作为替代原料在我公司水泥生产中的应用
The application of coal gangue as an alternative raw material in the cement industry
  
DOI:
中文关键词: 煤矸石,替代原料,熟料,水泥,生料配料
英文关键词: Coal gangue, alternative raw materials, clinker,cement,raw material ingredients
基金项目:
作者单位
李文福 唐山冀东水泥三友有限公司 
陈亚美 唐山冀东水泥三友有限公司 
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中文摘要:
      我公司不断探寻新型低成本可替代原料。粉煤灰为粉状物料且水分较高,容易堵下料口,造成下料困难,经过多次实验发现,煤矸石与湿粉煤灰成分相近,其为块状物料,易于输送,价格较湿粉煤灰更为低廉,具有较高的资源替代性。煤矸石可替代现有的铝质校正材料湿粉煤灰进行生料配料。使用煤矸石配料能减少煤的配入量,使系统实物煤耗降低约0.5 kg/t;煤矸石到厂价格较湿粉煤灰价格便宜20元/t左右,可有效降低生料配料成本,具有较好的经济效益。煤矸石中硫含量较高且波动较大,可能造成烧成系统结皮、尾气硫超标等,使用时应加强煅烧工艺控制,并做好硫排放控制措施。
英文摘要:
      Our company is constantly exploring new low-cost alternative raw materials. Fly ash is a powdery material with high moisture content, which can easily block the discharge port and make it difficult to discharge. After multiple experiments, it has been found that the composition of coal gangue is similar to that of wet fly ash, and it is a block material that is easy to transport. The price is lower than that of wet fly ash, and it has high resource substitutability. Coal gangue can replace the existing aluminum calibration material wet fly ash for raw material blending. The use of coal gangue as a raw material can reduce the amount of coal added, resulting in a reduction of approximately 0.5 kg/t in the standard coal consumption during clinker burning; The price of coal gangue at the factory is about 20 yuan/t cheaper than that of wet fly ash, which can effectively reduce the cost of raw material ingredients and has good economic benefits. The sulfur content in coal gangue is high and fluctuates greatly, which may cause scaling in the sintering system and excessive sulfur in the exhaust gas. When using it, it is necessary to strengthen the control of the calcination process and take measures to control sulfur emissions.
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