Waste solids handling
    6.
    发明申请
    Waste solids handling 有权
    废物固体处理

    公开(公告)号:US20070264178A1

    公开(公告)日:2007-11-15

    申请号:US11412816

    申请日:2006-04-27

    IPC分类号: C01G25/06

    摘要: A process is provided for handling waste solids produced from the chlorination of titanium-bearing ores in the presence of coke as a reducing agent, in particular waste metal chloride solids from a chloride process for making pigmentary titanium dioxide, which process comprises cooling the product stream from chlorination, separating the solids therein from the gaseous components of the product stream, combining the waste metal chloride solids and unreacted ore and coke solids with a liquid whereby waste metal chloride solids are dissolved in the liquid and unreacted ore and coke solids are slurried in the liquid, separating out unreacted ore and coke solids from the liquid including the dissolved waste metal chlorides, then after separating out unreacted ore and coke solids from the liquid, dividing the liquid including the dissolved waste metal chlorides into a recycle substream or portion and a bleed substream or portion, recycling the recycle substream or portion to comprise at least a part of the liquid which is combined with the waste metal chloride solids and unreacted ore and coke solids in the product stream, and neutralizing the bleed substream or portion to produce a filterable or directly landfillable mass of waste metal hydroxide solids.

    摘要翻译: 提供了一种方法,用于处理在作为还原剂的焦炭存在下的含钛矿石的氯化产生的废物固体,特别是用于制备颜料二氧化钛的氯化物方法的废金属氯化物固体,该方法包括冷却产物流 从氯化中分离其中的固体与产物流的气体组分,将废金属氯化物固体和未反应的矿石和焦炭固体与液体混合,由此将废金属氯化物固体溶解在液体中,未反应的矿石和焦炭固体在 液体,从包括溶解的废金属氯化物的液体中分离未反应的矿石和焦炭固体,然后从液体中分离未反应的矿石和焦炭固体后,将包含溶解的废金属氯化物的液体分成循环子流或部分, 泄放子流或部分,循环再循环子流或部分以包括在lea 这是液体的一部分,其与废金属氯化物固体和产物流中的未反应的矿石和焦炭固体相结合,并且中和排放子流或部分以产生可过滤或直接可填埋的废金属氢氧化物固体块。

    Process for preparing basic zirconium sulfates and other zirconium compounds such as zirconium fluosulfates,and compositions containing the same
    7.
    发明授权
    Process for preparing basic zirconium sulfates and other zirconium compounds such as zirconium fluosulfates,and compositions containing the same 失效
    用于制备基本的ZIRCONIUM硫酸盐和其它ZIRCONIUM化合物的方法,例如氟化锆,以及含有它们的组合物

    公开(公告)号:US3672825A

    公开(公告)日:1972-06-27

    申请号:US3672825D

    申请日:1970-02-16

    申请人: TIZON CHEM CORP

    IPC分类号: C01G25/00 C01G25/06 C22B59/00

    CPC分类号: C01G25/06 C01G25/00

    摘要: A PROCESS IS PROVIDED FOR PREPARING ZIRCONIUM SULFATES BY FUSING A ZIRCONIUM SILICEOUS ORE, SUCH AS ZIRCON SAND, WITH AN ALKALI METAL CARBONATE OR HYDROZIDE TO FORM AN ALKALI METAL ZIRCONYLOSILICATE, AND/OR ALKALI METAL ZIRCONATE, AND SILICATE, WHICH IS DISSOLVED IN AQUEOUS HYDROCHLORIC ACID TO FORM A CLEAR SOLUTION OF ZIRCONYL CHLORIDE AND SILICIC ACID. AN AQUEOUS SULFATE SOLUTION IS ADDED, AND THE MIXTURE HEATED TO RPECIPITATE A ZIRCONIUM SULFATE. THIS CAN BE CALCINED TO FORM ZIRCONIUM OXIDE. IF FLUORIDE IS ADDED WITH THE SULFATE SOLUTION, A SERIES OF BASIC AND ACIDIC ZIRCONIUM FLUOSULFATES CAN BE OBTAINED USEFUL AS A GLASS POLISHING ADDITIVE. THE ZIRCONIUM FLUOSULFATES CAN ALSO BE CALCINED, TO FORM A VERY PURE ZIRCONIUM OXIDE. A PROCESS ALSO IS PROVIDED FOR PREPARING A ZIRCONIUM OXIDE HAVING A VERY LOW PROPORTION OF SILICA, BY CALCINING A ZIRCONIUM COMPOUND COMPRISING SILICA IN THE PRESENCE OF FLUORINE OR A FLUORIDE.