A new type of complex flocculant PBKD is prepared from coal refuse and pyrite slag, and is used as flocculant in the treatment of tanning waste water.
以煤矸石及硫酸烧渣做原料，制备了一种新型复合絮凝剂PBKD，并将其用于制革废水的处理。
Extracting alumina from coal refuse, sintering cement clinker directly from residues and circulating waste gas and liquid is a unusual technology for utilization of coal refuse.
从煤矸石中提取氧化铝，并用残渣直接煅烧硅酸盐水泥熟料，同时作废气、废液循环，是煤矸石资源开发利用的新工艺。
Take new built mine seam for example, expound the advantages of leaving roadway fashion of concrete coal refuse cinder cement stone wall, and make analysis of technical economic.
以典型的新建煤矿煤层为例，阐述采用水泥煤矸碴胶泥砌筑石墙留巷方式的优点，并进行技术经济分析。
In-door planting experiment was carried out to study the influence of the mining offal, using coal refuse and fly ash as the planting medium, on the crop of red soybean.
通过室内栽培试验，研究了煤矸石和粉煤灰作为培养基对作物生长的影响。
In-door planting experiment was carried out to study the influence of the mining offal, using coal refuse and fly ash as the planting medium, on the crop of red soybean.
通过室内栽培试验，研究了煤矸石和粉煤灰作为培养基对作物生长的影响。
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