Process for manufacturing titanium dioxide
    1.
    发明授权
    Process for manufacturing titanium dioxide 失效
    制造二氧化钛的方法

    公开(公告)号:US4288418A

    公开(公告)日:1981-09-08

    申请号:US202039

    申请日:1980-10-29

    IPC分类号: C01G23/053 C22B34/12

    摘要: A process is provided for the manufacture of titanium dioxide pigment wherein excess ilmenite ore is reacted with dilute sulfuric acid having a concentration of between about 25% and about 60% by weight and in preferably at least two stages wherein the first stage is maintained at a temperature up to about 140.degree. C. and the second stage is conducted at a lower temperature (than the first stage) which is below about 100.degree. C. to provide a salt solution of titanium and iron. Thereafter, the titanium is hydrolyzed to provide titanium dioxide hydrate accompanied by recycling the spent acid from the hydrolysis for reaction with the ilmenite ore charged to the process. The titanium hydrate is calcined to provide titanium dioxide pigment.

    摘要翻译: 提供了一种用于制造二氧化钛颜料的方法,其中过量的钛铁矿矿石与浓硫酸的浓度在约25%至约60%之间,优选至少两级的稀硫酸反应,其中第一级保持在 温度高达约140℃,第二阶段在低于约100℃的较低温度(低于第一阶段)进行,以提供钛和铁的盐溶液。 此后,钛被水解以提供二氧化钛水合物,伴随着从水解中回收废酸与用于与该方法反应的钛铁矿的反应。 将钛水合物煅烧以提供二氧化钛颜料。

    Method for purifying titanyl hydrate
    2.
    发明授权
    Method for purifying titanyl hydrate 失效
    净化水合氧化钛的方法

    公开(公告)号:US4364908A

    公开(公告)日:1982-12-21

    申请号:US286305

    申请日:1981-07-24

    IPC分类号: C01G23/04 C09C1/36 C22B34/12

    摘要: A process is provided for removing impurities from a slurry of titanyl hydrate. The titanyl hydrate is separated from the slurry, washed, and reslurried with water to make the resulting titanyl hydrate slurry fluid. The reslurried titanyl hydrate slurry is then treated by the addition of a trivalent titanium compound in an amount between about 0.01 grams and about 0.7 grams trivalent titanium compound measured as TiO.sub.2 per 100 grams titanyl hydrate as calcined TiO.sub.2 in the absence of additional acid values. The titanyl hydrate is then separated from the treated slurry, washed and recovered.

    摘要翻译: 提供了从水合氧化钛的浆料中除去杂质的方法。 将水合氧钛从浆料中分离出来,洗涤并用水重新制成水合物制成的水合物浆液。 然后,在不存在另外的酸值的情况下,通过加入约0.01克至约0.7克三价钛化合物,以每100克氧化钛水合物作为煅烧TiO 2测量的三价钛化合物加入三聚钛化合物来处理该再生水合氧化物浆料。 然后将氧化钛水合物与经处理的浆液分离,洗涤并回收。

    Process for manufacturing titanium compounds using a reducing agent
    3.
    发明授权
    Process for manufacturing titanium compounds using a reducing agent 失效
    使用还原剂制造钛化合物的方法

    公开(公告)号:US4288415A

    公开(公告)日:1981-09-08

    申请号:US151998

    申请日:1980-05-30

    摘要: A process is provided for the manufacture of titanium compounds and particularly titanium dioxide wherein excess titaniferous bearing material is reacted with dilute sulfuric acid having a concentration of between about 25% and about 60% by weight at a temperature below about 140.degree. C., and in the presence of a reducing agent which affects the reduction of ferric iron to ferrous iron. Thereafter, the titanium sulfate may be recovered or further processed to provide titanium dioxide hydrate accompanied by recycling the spent acid for reaction with the titaniferous bearing material charged to the process. The titanium hydrate may be calcined to provide titanium dioxide.

    摘要翻译: 提供了一种用于制造钛化合物,特别是二氧化钛的方法,其中过量含钛材料与稀硫酸在低于约140℃的温度下与约25%至约60%重量的浓度反应,以及 在还原剂存在下,这种还原剂会影响三价铁还原成二价铁。 此后,可以回收或进一步处理硫酸钛以提供二氧化钛水合物,伴随着废弃的酸再循环,以与装入该方法的含钛负载材料反应。 可以将钛水合物煅烧以提供二氧化钛。

    Process for manufacturing a stable titanyl sulfate solution
    4.
    发明授权
    Process for manufacturing a stable titanyl sulfate solution 失效
    制备稳定的硫酸氧钛溶液的方法

    公开(公告)号:US4275041A

    公开(公告)日:1981-06-23

    申请号:US188805

    申请日:1980-09-19

    CPC分类号: C22B34/125 C01G23/008

    摘要: A process is provided for the manufacture of a stable titanyl sulfate solution by diluting a reaction mixture containing iron sulfate and titanyl sulfate with a material selected from water, a titanyl sulfate solution, and mixtures thereof. The titanyl sulfate solution may be recovered or processed to provide titanium dioxide hydrate which may be calcined to provide titanium dioxide pigment.

    摘要翻译: 提供了通过用选自水,硫酸氧钛溶液及其混合物的材料稀释含有硫酸铁和硫酸氧钛的反应混合物来制备稳定的硫酸氧钛溶液的方法。 可以回收或加工硫酸氧钛溶液以提供二氧化钛水合物,其可以被煅烧以提供二氧化钛颜料。

    Process for manufacturing titanium dioxide
    5.
    发明授权
    Process for manufacturing titanium dioxide 失效
    制造二氧化钛的方法

    公开(公告)号:US4288417A

    公开(公告)日:1981-09-08

    申请号:US201938

    申请日:1980-10-29

    IPC分类号: C01G23/053 C22B34/12

    摘要: A process is provided for the manufacture of titanium dioxide pigment wherein excess ilmenite ore is reacted with dilute sulfuric acid having a concentration of between about 25% and about 60% by weight in the presence of an iron reductant, and in preferably at least two stages wherein the first stage is maintained at a temperature up to about 140.degree. C. and the second stage is conducted at a lower temperature (than the first stage) which is below about 100.degree. C. to provide a salt solution of titanium and iron. Thereafter, the titanium is hydrolyzed to provide titanium dioxide hydrate accompanied by recycling the spent acid from the hydrolysis for reaction with the ilmenite ore charged to the process. The titanium hydrate is calcined to provide titanium dioxide pigment.

    摘要翻译: 提供了一种制备二氧化钛颜料的方法,其中过量的钛铁矿矿石与在铁还原剂存在下浓度为约25重量%至约60重量%的稀硫酸反应,优选至少两个阶段 其中第一阶段保持在高达约140℃的温度,第二阶段在低于约100℃的较低温度(比第一阶段)进行,以提供钛和铁的盐溶液。 此后,钛被水解以提供二氧化钛水合物,伴随着从水解中回收废酸与用于与该方法反应的钛铁矿的反应。 将钛水合物煅烧以提供二氧化钛颜料。

    Process for manufacturing titanium compounds
    6.
    发明授权
    Process for manufacturing titanium compounds 失效
    钛化合物的制造方法

    公开(公告)号:US4288416A

    公开(公告)日:1981-09-08

    申请号:US151999

    申请日:1980-05-30

    摘要: A process is provided for the manufacture of titanium compounds and particularly titanium dioxide wherein excess titaniferous bearing material is reacted with dilute sulfuric acid having a concentration of between about 25% and about 60% by weight at a temperature below about 140.degree. C. Thereafter, the titanium sulphate may be recovered or processed to provide titanium dioxide hydrate accompanied by recycling the spent acid for reaction with the titaniferous bearing material charged to the process. The titanium hydrate may be calcined to provide titanium dioxide pigment.

    摘要翻译: 提供了一种用于制造钛化合物,特别是二氧化钛的方法,其中过量的含钛载体材料在低于约140℃的温度下与浓度为约25%至约60%重量的稀硫酸反应。之后, 可以回收或加工硫酸钛以提供二氧化钛水合物,伴随着废弃的酸再循环,以与装入该方法的含钛承载材料反应。 可以将钛水合物煅烧以提供二氧化钛颜料。