Froth flotation of mineral fines
    91.
    发明授权
    Froth flotation of mineral fines 失效
    泡沫浮选矿物细粉

    公开(公告)号:US4956077A

    公开(公告)日:1990-09-11

    申请号:US260615

    申请日:1988-10-21

    Abstract: Particles of a desired mineral are recovered from particles of an unwanted mineral in an aqueous slurry by a froth flotation process in which, after treatment of the mineral particles with a collector, a predominantly hydrophobic polymeric flocculating agent, which will selectively flocculate the desired mineral particles, is added to the slurry. The predominantly hydrophobic polymeric flocculating agent may be for example a polyvinyl ether or a polybutadiene and may be predispersed in a carrier liquid, which may be the frother used to produce the froth.

    Abstract translation: 所需矿物的颗粒通过泡沫浮选方法从含水浆料中的不想要的矿物的颗粒中回收,其中在用收集器处理矿物颗粒之后,主要是疏水性的聚合物絮凝剂将选择性地絮凝所需的矿物颗粒 ,添加到浆料中。 主要疏水的聚合物絮凝剂可以是例如聚乙烯醚或聚丁二烯,并且可以预先分散在载体液体中,载体液体可以是用于产生泡沫的起泡剂。

    Selective flocculation of coal
    92.
    发明授权
    Selective flocculation of coal 失效
    煤的选择性絮凝

    公开(公告)号:US4555329A

    公开(公告)日:1985-11-26

    申请号:US679728

    申请日:1984-12-10

    Abstract: A method for separating inorganic gangues from coal particulates dispersed in a coal refuse slurry comprises the selective flocculation of the coal refuse slurry by initially adding an anionic dispersant followed subsequently by adding an anionic flocculant, allowing the flocculating coal slurry obtained to settle and collecting a concentrated settled coal slurry having a lowered ash value. The dispersed inorganic gangues may be recovered by the addition of a cationic flocculant/coagulant with subsequent recycle of the aqueous phase.

    Abstract translation: 分离无机ang石与分散在煤渣中的煤颗粒分离的方法包括:首先加入阴离子分散剂,然后加入阴离子絮凝剂,使得所获得的絮凝煤浆沉降并收集浓缩的煤渣,选择性地絮凝煤渣 沉降的煤浆具有降低的灰分值。 可以通过添加阳离子絮凝剂/凝结剂随后再循环水相来回收分散的无机ang石。

    Method for removing inorganic sulfides from non-sulfide minerals
    93.
    发明授权
    Method for removing inorganic sulfides from non-sulfide minerals 失效
    从非硫化物矿物中除去无机硫化物的方法

    公开(公告)号:US4552652A

    公开(公告)日:1985-11-12

    申请号:US542349

    申请日:1983-10-17

    Abstract: A method for removing inorganic sulfides from finely ground, non-sulfide minerals is provided. A polymeric agent having a molecular weight of from about 1,000 to about 300,000 and with a plurality of xanthate groups per molecule is admixed into an aqueous suspension including inorganic sulfides and non-sulfide minerals. The polymeric agent adsorbs onto the inorganic sulfides and maintains them as a dispersion while the remaining minerals are selectively separated, as by flocculation.

    Abstract translation: 提供了从精细研磨的非硫化物矿物中除去无机硫化物的方法。 将分子量为约1,000至约300,000并且每分子具有多个黄原酸酯基团的聚合物混合到包括无机硫化物和非硫化物矿物质的水性悬浮液中。 聚合物吸附到无机硫化物上并保持它们作为分散体,而剩余的矿物质通过絮凝选择性分离。

    Method for treating oil sands extraction plant tailings
    94.
    发明授权
    Method for treating oil sands extraction plant tailings 失效
    油砂提取厂尾矿处理方法

    公开(公告)号:US4437998A

    公开(公告)日:1984-03-20

    申请号:US371083

    申请日:1982-04-23

    Inventor: Raymond N. Yong

    Abstract: Tailings from an oil sands hot water process extraction plant are mixed with hydrolyzed starch flocculant and transferred to a settling pond. After a residence period on the order of one year, sludge from the lower region of the settling pond is withdrawn, mixed with a hydrolyzed starch dewatering agent and transferred to a collecting pond. After a residence period on the order of one week, partially dewatered sludge is withdrawn, mixed with sand, and deposited in a terminal disposal area, the sand in the mixture there effecting an internal surcharge to obtain further dewatering. The hydrolyzed starch additives are obtained by the aqueous hydrolysis of a starch in the presence of one or more metal salts.

    Abstract translation: 来自油砂热水处理提取厂的尾矿与水解淀粉絮凝剂混合并转移到沉淀池中。 在一年左右的居住期间,从沉淀池下部的污泥撤出,与水解淀粉脱水剂混合并转移到收集池。 经过一周的居住期间,取出部分脱水的污泥,与砂混合,并存放在终端处理区域,混合物中的沙子产生内部附加费,以进一步脱水。 水解淀粉添加剂通过在一种或多种金属盐存在下水解淀粉而得到。

    Selective flocculation for iron values
    97.
    发明授权
    Selective flocculation for iron values 失效
    铁价选择性絮凝

    公开(公告)号:US4282087A

    公开(公告)日:1981-08-04

    申请号:US41031

    申请日:1979-05-21

    Abstract: An iron ore is finely ground and slurried prior to being subjected to treatment with a selective flocculant for iron values. Subsequent to treatment, the iron values are allowed to settle into the underflow concentrate and be recovered. The selective flocculant employed is a hydroxymethylated polyacrylamide having a high molecular weight and a degree of hydroxymethylation in excess of about 50%.

    Abstract translation: 铁矿石在被用铁选择性选择性絮凝剂处理之前,经过细磨和浆化。 在处理之后,允许铁值沉降到底流浓缩物中并回收。 使用的选择性絮凝剂是具有高分子量和羟甲基化程度超过约50%的羟甲基化聚丙烯酰胺。

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