公开(公告)号：US4014977A

公开(公告)日：1977-03-29

申请号：US679125

申请日：1976-04-21

申请人： Luigi Piccolo ,  Antonio Paolinelli ,  Tullio Pellizzon

发明人： Luigi Piccolo ,  Antonio Paolinelli ,  Tullio Pellizzon

IPC分类号： C01G23/053 ,  C01G23/06

CPC分类号： C01G23/0534 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2006/60

摘要： Titanium sulphate solutions obtained in the sulphate process from titaniferous materials are hydrolized by contacting at 88.degree.-98.degree. C water with a first titanium sulphate solution having a TiO.sub.2 titer of 230-260 g/l and an acid factor of 1.75-1.85, adding at 88.degree.-98.degree. C to the mixture a second titanium sulphate solution having a TiO.sub.2 titer of 230-260 g/l and an acid factor of 2.1-2.4 and heating the resulting mixture at boiling point. A volumetric ratio of from 3:100 to 12:100 is maintained between the first and the second solution.

摘要翻译： 在含钛材料的硫酸盐工艺中获得的硫酸钛溶液通过在88℃-98℃下与TiO 2滴定度为230-260g / l和酸度因子1.75-1.85的第一硫酸钛溶液接触而水解，加入 在88℃-98℃下向混合物中加入TiO 2滴定度为230-260g / l，酸值为2.1-2.4的第二硫酸钛溶液，并在沸点下加热得到的混合物。 在第一和第二溶液之间保持体积比为3：100至12：100。

公开(公告)号：US3760058A

公开(公告)日：1973-09-18

申请号：US3760058D

申请日：1971-02-19

申请人： BAYER AG

发明人： LANGMESSER P ,  LANGMESSER M ,  VOLZ H ,  KIENAST G

IPC分类号： C01G23/053 ,  C09C1/36 ,  C22B34/12 ,  C01G23/00 ,  C01G23/06 ,  C01G23/08

CPC分类号： C01G23/0534 ,  C01P2006/60 ,  C09C1/3607 ,  C22B34/125 ,  C22B34/1259

摘要： Production of a hydrolysis solution used to form titanium oxyhydrate and in turn titanium dioxide pigments having a high degree of whiteness, by digesting titanium dioxide-containing raw material with sulfuric acid at a weight ratio of TiO2 to H2SO4 of about 1:1-20, crystallizing the digested titanium in the form of titanyl sulfate dihydrate by adjusting the acid concentration, separating and redissolving the crystals to form an aqueous hydrolysis solution, and separating the hydrolysis solution from any undissolved constitutents present, to permit subsequent hydrolysis of the titanium content in the hydrolysis solution to form titanium oxyhydrate, and recovery of the oxyhydrate thereby formed for producing in turn TiO2 pigment.

摘要翻译： 通过用硫酸以TiO 2与H 2 SO 4的重量比为约1：1-20消耗含二氧化钛的原料，生产用于形成氧化钛水合物的水解溶液，然后生产具有高白度的二氧化钛颜料， 通过调节酸浓度，分离和重新溶解晶体以形成水解水解溶液，并将水解溶液与存在的任何未溶解的组分分离，以使钛含量在 水解溶液以形成氧化钛水合物，并由此形成氧化水合物，从而制备TiO 2颜料。

公开(公告)号：US3625650A

公开(公告)日：1971-12-07

申请号：US3625650D

申请日：1969-08-27

申请人： NL INDUSTRIES INC

发明人： LIBERA JOHN J ,  PUETZ ECKARD J

IPC分类号： C01G23/053 ,  C01G23/04 ,  C01G23/06 ,  C01G23/08

CPC分类号： C01G23/0532 ,  C01P2006/60

摘要： THIS INVENTION RELATES IN GENERAL TO A PROCESS FOR PREPARING A HIGH QUALITY TITANIUM DIOXIDE PIGMENT IN WHICH THE TITANIUM DIOXIDE IS IN THE ANATASE CRYSTAL FORM. THE PROCESS COMPRISES HYDROLYZING IN A PARTICULAR MANNER THE TITANIUM VALUES FROM A TITANIUM SULFATE-FERROUS SULFATE SOLUTION IN WHICH THE CONCENTRATION OF TITANIUM IS FROM 80 TO 180 G.P.L. CALCULATED AS TIO2 AND TREATING AND CALCINING THE HYDRATE SO FORMED TO PRODUCE A HIGH GRADE ANATASE TIO2 PIGMENT. USING THE HYDROLYSIS PROCESS OF THE INSTANT INVENTION, A HIGH GRADE ANATASE TITANIUM DIOXIDE PIGMENT MAY BE PRODUCED FROM A TITANIUM SULFATE-FERROUS SULFATE SOLUTION WITHOUT UTILIZING THE CONVENTIONAL CRYSTALLIZATION STEP FOR REMOVING MOST OF THE IRON VALUES NOR THE CONCENTRATION STEP FOR INCREASING THE TITANIUM CONTENT IN THE LIQUOR TO AT LEAST 200G.P.L. TIO2.

公开(公告)号：US3486847A

公开(公告)日：1969-12-30

申请号：US3486847D

申请日：1967-09-15

申请人： TITAN GMBH

发明人： STEINHAUSEN HELMUT

IPC分类号： C22B34/12 ,  G05D21/02 ,  G01N33/24 ,  C01G23/06 ,  G01N27/32 ,  G01N31/00

CPC分类号： C22B34/1259 ,  G05D21/02 ,  Y02P10/212

公开(公告)号：US4119697A

公开(公告)日：1978-10-10

申请号：US814506

申请日：1977-07-11

申请人： William K. Tolley

发明人： William K. Tolley

IPC分类号： C22B34/12 ,  C01G23/06

CPC分类号： C22B34/1245 ,  Y02P10/212

摘要： Titanium metal values may be recovered from a titanium bearing source by subjecting the titanium bearing source to a reductive roast followed by leaching the reduced source with a hydrogen chloride source. Thereafter the leached titanium bearing source is precipitated by contact with a metal oxide such as ferric oxide in which the metal is present in a highly oxidized state. The precipitated titanium dioxide is separated and recovered while the spent liquor is treated to form hydrogen chloride which may be recycled to the leaching zone with a simultaneous formation of the metal oxide for recycle to the precipitation zone.

摘要翻译： 钛金属值可以通过使钛承载源经受还原性焙烧，然后用氯化氢源浸出还原源而从钛轴承源回收。 此后，通过与其中金属以高度氧化态存在的氧化铁等金属氧化物接触来析出浸渍的钛负载源。 分离和回收沉淀的二氧化钛，同时处理废液形成氯化氢，其可以再循环到浸出区，同时形成用于再循环到沉淀区的金属氧化物。

公开(公告)号：US4119696A

公开(公告)日：1978-10-10

申请号：US851098

申请日：1977-11-14

申请人： William K. Tolley

发明人： William K. Tolley

IPC分类号： C01G23/04 ,  C22B34/12 ,  C01G23/06

CPC分类号： C22B34/1245 ,  C01G23/04 ,  Y02P10/212

摘要： Titanium metal values may be recovered from a metal bearing source by subjecting the source to an oxidation step. The oxidized source is then divided, one portion being set to a reductive roast followed by leaching with hydrochloric acid. Thereafter, the remaining portion of the oxidized source is brought into contact with the leached solution whereby titanium dioxide is precipitated. The precipitated titanium dioxide is separated and recovered while the soluble metal values are treated for recovery thereof with a concurrent formation of hydrogen chloride, the latter being recycled back to the leaching zone.

摘要翻译： 可以通过使源进行氧化步骤从金属轴承源回收钛金属值。 然后将氧化源分开，一部分设定为还原性焙烧，然后用盐酸浸出。 此后，氧化源的剩余部分与浸出的溶液接触，由此二氧化钛沉淀。 沉淀的二氧化钛被分离和回收，同时可溶性金属值被处理以回收，同时形成氯化氢，后者被再循环回到浸出区。

公开(公告)号：US4098869A

公开(公告)日：1978-07-04

申请号：US839471

申请日：1977-10-04

申请人： Antonio Paolinelli ,  Tullio Pellizzon ,  Luigi Piccolo

发明人： Antonio Paolinelli ,  Tullio Pellizzon ,  Luigi Piccolo

IPC分类号： C01G23/053 ,  C01G23/06

CPC分类号： C01G23/0532 ,  C01P2004/62 ,  C01P2006/60

摘要： Hydrolysis of a titanyl sulphate solution is carried out according to the autonucleation method of gradually adding the solution to a body of water at a substantially constant rate over 10-20 minutes, in such a way as to obtain an ionic concentration after one minute of feeding of from 75 to 105 g/l, the concentration of sulphuric acid in the final hydrolysis solution being regulated to a value of from 310 to 330 g/l by adding water from the commencement of clouding of the hydrolysis solution up to the end of hydrolysis.

公开(公告)号：US3981978A

公开(公告)日：1976-09-21

申请号：US577492

申请日：1975-05-14

申请人： Raoul Weiler ,  Henri Uwents

发明人： Raoul Weiler ,  Henri Uwents

IPC分类号： C01G23/04 ,  C01G23/047 ,  C09C1/36 ,  C01G23/06 ,  C01G23/08

CPC分类号： C01G23/0475

摘要： In the recovery of titanium dioxide by subjecting an aqueous titanium dioxide hydrate suspension to at least one stage of filtering and washing to form a washed filter cake, adjusting the composition and calcining the adjusted and washed filter cake, the improvement which comprises filtering the aqueous titanium dioxide hydrate suspension under a pressure of about 1 bar to 16 bars to form a homogeneous substantially crack-free filter cake of a thickness of about 10 to 25 mm. Advantageously a membrane filter is employed, and washing is effected under a pressure of 1 to 16 bars and a liquid flow rate of 0.1 to 1 m/h to produce a filter cake having a solids content of at least 45 % by weight.

摘要翻译： 在二氧化钛水溶液的回收中，将二氧化钛水合物悬浮液进行至少一个过滤和洗涤阶段以形成洗涤过的滤饼，调节组合物并煅烧经过调节和洗涤的滤饼，其改进包括过滤钛水溶液 二氧化碳水合物悬浮液在约1巴至16巴的压力下形成厚度为约10至25mm的均匀的基本上无裂纹的滤饼。 有利地，使用膜过滤器，并且在1至16巴的压力和0.1至1m / h的液体流速下进行洗涤以产生固体含量为至少45重量％的滤饼。

公开(公告)号：US3929962A

公开(公告)日：1975-12-30

申请号：US28454172

申请日：1972-08-29

申请人： SHIAH CHYN DUOG

发明人： SHIAH CHYN DUOG

IPC分类号： C01G23/047 ,  C01G23/053 ,  C01G23/08 ,  C09C1/00 ,  C09C1/36 ,  C22B34/12 ,  C01G23/02 ,  C01G23/04 ,  C01G23/06

CPC分类号： C01G23/0536 ,  C01G23/08 ,  C01P2006/80 ,  C22B34/1245 ,  Y02P10/212

摘要： A process for refining titania-containing ores is described based on the increased reactivity of lower valent titanium oxides over tetravalent titanium oxides. The process includes the conversion of such titania ores, preferably beneficiated, to lower valent titanium oxides by reduction at elevated temperatures, extraction of the lower valent titanium values with HCl, oxidation of the extracted titanium values to tetravalent titanium compounds and recovery of purified TiO2 from the tetravalent titanium compounds. The residue left after the extraction step may be returned to the conversion step for reduction of residual tetravalent titanium values. Traces of fluorine or hydrofluoric acid have been found to catalyze the reaction.

摘要翻译： 基于提高低价钛氧化物对四价钛氧化物的反应性，描述了一种精炼含二氧化钛的矿石的方法。 该方法包括通过在升高的温度下还原将这种优选的二氧化钛矿石转化为较低价的钛氧化物，用HCl萃取较低价的钛值，将提取的钛值氧化成四价钛化合物，并将纯化的二氧化钛从 四价钛化合物。 在提取步骤后留下的残余物可以返回到用于还原残余四价钛值的转化步骤。 已经发现氟或氢氟酸的痕迹催化反应。

公开(公告)号：US3565580A

公开(公告)日：1971-02-23

申请号：US3565580D

申请日：1969-02-10

申请人： TITAN GMBH

发明人： KLEIN EDGAR ,  KULLING ACHIM ,  PAUL RUDIGER ,  STEINHAUSEN HELMUT

IPC分类号： C01G23/053 ,  C01G23/04 ,  C01G23/06

CPC分类号： C01G23/0536 ,  C01P2004/10 ,  C01P2004/30 ,  C01P2006/60 ,  C01P2006/80

摘要： THE INVENTION IS CONCERNED WITH A PROCESS FOR THE MANUFACTURE OF ROUNDED-OFF RUTILE PIGMENT PARTICLES BY THE HYDROLYSIS OF HYDROCHLORIC ACID SOLUTIONS CONTAINING TITANIUM CHLORIDE SOLUTION, WHICH CONTAIN LESS THAN 0.2% SILICIC ACID.