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白煤渣又称“碳化煤球”,是化肥厂生产化肥时产生的工业废渣,其中含有一定的残留碳,发热量约为1800～2600kJ/kg,销售价格低于黑煤渣5～10元/m~3,一些砖瓦企业用它掺作内燃后,取得了较好的经济效益.但碳化煤球中含有约25%左右的氧化钙,原料土中掺入一定数量之后,制砖原料成分尤其是CaO的含量发生变化,给砖瓦的成型及焙烧带来了一系列的影响,有些砖瓦厂往往忽视工艺参数的研究,盲目掺用,导致半成品损失严重,出现缺棱掉角、石灰爆裂、焦砖等质量问题.
White coal slag, also known as “carbonized coal briquettes”, is the industrial waste produced by the fertilizer plant when it is used to produce chemical fertilizers. It contains a certain amount of residual carbon with a heat of about 1,800-2,600 kJ/kg, and the sales price is lower than that of black coal slag, 5-10 yuan/m. 3, Some brick and tile companies used it as internal combustion, and achieved good economic benefits. However, the carbonized coal briquettes contain about 25% of calcium oxide. After the raw materials are mixed with a certain amount of raw materials, the brick raw material components are especially CaO. The change of the content has brought about a series of impacts on the molding and roasting of bricks and tiles. Some brick and tile plants often ignore the research on the process parameters and blindly mix them, resulting in serious losses of semi-finished products, missing corners, lime burst, and coke Bricks and other quality issues.