湖北省膨润土矿产品的开发应用研究

RESEARCHES ON EXPLOITATION AND APPLICATION OF BENTONITE PRODUCTS IN HUBEI PROVINCE

本文是对湖北省膨润土的开发利用及提高其性能的研究成果。通过最佳粒度选择及碾压等工艺使膨润土造桨率由8m^3/t提高到12.5m^3/t。研制了合理配方使活性白土脱色力由100提高到200以上。湿压强度在原来的基础上提高0.01MPa。此外还开发了效果显著的矿物饲科添加剂,填补了我省的一项空白。以上四项研究成果均已不同程度的转化为产品。

By researching into the application of bentonites in Hubei, 4 items of results have been obtained. (1) Through four steps of confirming the optimum grain size of ores, compression processing, low-temperature baking and additives, the mud-making ratio increases from 5～8m^3/t to 10～12.5m^3/t. The test confirming the optimum grain size indicates that the finer crushing is not the better grain size and that the various samples are different in optimum grain size ranging from 40 meshes to 160 meshes. With compression technolo-gy, the mud-making ratio can increase by about 25% and obviously decrease the filter loss. (2) Two kinds of mineral feed additives have been prepared by adding a little amount of minor elements to the bentonite. Through the test of mineral feed additives, the weights added to the pig, piglet and chicken increase by 10.4%～20.5% more than those of the comparison group, being of certain benefit to economy; the applied mechanism of the mineral feed additives is also researched in this paper. (3) Based on the study and preparation of activated porcellanites in laboratory, the directions for producing the activated porcellanites of high quality have been improved in order that the decolorization capacity increases from 100 to 200～356. (4) By study, it is indicated that the method of bentonites treated with sodium car-bonate solution is a good sodium metasometism that the Husi bentonites as a cast cement may increase its quality from 30kPa to 40～50kPa in wet compressive strength.