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专利摘要膨润土原矿的选矿方法是在60℃以上的温度下,用碱处理基本上不含氧化铁的膨润土水悬浮液。用碱处理过的膨润土至少要用水洗涤一次,以除去其中的碱,然后这种经过碱处理和水洗涤后的膨润土悬浮液,在均化器中经受剪切、研磨、冲击力的作用,在该均化器中,在250磅/平方英时(1.7百万帕斯卡)以上的压力下,膨润土悬浮液高速通过细窄并且表面经过精细刨光的间隙,而被压成平行于层压面的薄片。然后将按此法得到的膨润土悬浮液,进行干燥便得到很白的无菌产品。
Patent Abstract The beneficiation of bentonite ore is the treatment of an essentially iron oxide-free aqueous bentonite suspension with an alkali at a temperature above 60 ° C. The bentonite treated with alkali is washed at least once with water to remove the alkali therein, and this bentonite suspension after alkali treatment and water washing is subjected to shearing, grinding and impact in a homogenizer, In the homogenizer, the bentonite suspension is pressed at high speed above 250 psig (1.7 megapascals) through a narrow, finely-divided surface of the surface to be parallel to the surface of the laminate Sheet. The bentonite suspension obtained according to this method is then dried to give a very white sterile product.