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1.发明授权
公开(公告)号：US4292085A
公开(公告)日：1981-09-29
申请号：US75446
申请日：1979-09-14
CPC分类号： C01G49/14 , Y10S106/90 , Y10S423/12
摘要： Ferrous sulphate heptahydrate obtained as a by-product of the production of titanium dioxide by the sulphate process is converted into a non-polluting, free-flowing particulate neutralization product by contacting said sulphate with calcium hydroxide as a neutralizing agent in a molar ratio between said neutralizing agent and said ferrous sulphate of at least 1:1, and reacting the resulting mixture under agitation at a temperature not exceeding 60.degree. C. and for a contact time not exceeding five minutes.
摘要翻译： 通过硫酸盐法生产二氧化钛的副产物获得的作为副产物的硫酸亚铁七水合物通过使所述硫酸盐与作为中和剂的氢氧化钙以所述的中和剂的摩尔比接触而转化成无污染的自由流动的颗粒中和产物 中和剂和所述硫酸亚铁至少为1:1，并在搅拌下在不超过60℃的温度下反应所得混合物，接触时间不超过5分钟。
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2.发明授权
公开(公告)号：US4045205A
公开(公告)日：1977-08-30
申请号：US703144
申请日：1976-07-07
IPC分类号： C09K17/00 , C01B17/50 , C01G49/00 , C01G49/14 , C05D9/02 , C09K17/02 , C09K101/00 , C05D9/00
CPC分类号： C01G49/00 , Y10S71/903
摘要： Soil modifiers comprising from 80 to 95% by weight of a mixture of ferric oxide and ferric sulphate in an oxide/sulphate weight ratio of from 0.2:1 to 2:1 are prepared by calcining at 500.degree.-600.degree. C in the presence of an oxidizing gas a material consisting essentially of ferrous sulphate with an average number of molecules of crystallization of from 1 to 5 obtained by partial dehydration of the waste materials, consisting essentially of ferrous sulphate heptahydrate, obtained in the manufacture of titanium dioxide from ilmenites or ilmenite slags by the sulphate process. These modifiers are particularly suitable for clay soils.
摘要翻译： 包含80至95重量％氧化铁和硫酸铁的氧化物/硫酸盐重量比为0.2:1至2:1的混合物的土壤改性剂通过在500-600℃下，在存在 一种氧化气体，一种主要由硫酸亚铁组成的材料，其平均结晶分子数为1至5，通过废料的部分脱水获得，其基本上由硫酸亚铁七水合物制成，其由钛铁矿或钛铁矿制造二氧化钛 硫酸盐过程渣。 这些改性剂特别适用于粘土。
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3.发明授权Novel composition for use in agriculture as soil improvers and fertilizers and process for their production 失效用于农业的新型组合物，作为土壤改良剂和肥料及其生产过程
公开(公告)号：US4071347A
公开(公告)日：1978-01-31
申请号：US631275
申请日：1975-11-12
摘要： Novel compositions for use in agriculture as soil improvers and fertilizers comprising as essential components ammonium sulfate and ferric oxide hydrate. By-products obtained in the production of titanium dioxide from ilmenite or ilmenite slag in the sulfate process and substantially consisting of ferrous sulfate heptahydrate are reacted with ammonia and that the reaction product obtained, consisting substantially of ammonium sulfate and ferrous hydrate, is subsequently oxidized until a composition is obtained which substantially consists of ammonium sulfate and ferric oxide hydrate.
摘要翻译： 用于农业的新型组合物作为土壤改良剂和肥料，其包含作为必需组分的硫酸铵和氧化铁水合物。 在硫酸盐工艺中由钛铁矿或钛铁矿矿渣生产二氧化钛，并且基本上由七水硫酸亚铁组成的副产物与氨反应，并且基本上由硫酸铵和水合铁形成的反应产物随后被氧化直到 获得了基本上由硫酸铵和氧化铁水合物组成的组合物。
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4.发明授权
公开(公告)号：US4077794A
公开(公告)日：1978-03-07
申请号：US775683
申请日：1977-03-08
申请人： Luigi Piccolo , Antonio Paolinelli
发明人： Luigi Piccolo , Antonio Paolinelli
CPC分类号： C05D9/00 , C09K17/02 , Y10S71/903
摘要： A soil modifier comprising from 80 to 95% by weight of a mixture of ferric oxide and ferric sulphate in an oxide/sulphate weight ratio of from 0.25:1 to 1:1, is prepared by calcining at 500.degree.-600.degree. C in an oxidizing atmosphere a blend of by-product obtained in the manufacture of titanium oxide by the sulphate process, with at least 20% by weight with respect to said by-product, of a material based on ferric sulphate and/or ferric oxide. Calcining is then continued under the same conditions, replacing said material in the blend continuously fed in by a recycle fraction of the product continuously discharged.
摘要翻译： 通过在500-600℃下煅烧，通过在氧化物/硫酸盐重量比为0.25:1至1:1的温度下煅烧80至95重量％的氧化铁和硫酸铁的混合物， 在氧化气氛中，通过硫酸盐法制备氧化钛中获得的副产物与相对于所述副产物的至少20重量％的基于硫酸铁和/或氧化铁的材料的共混物。 然后在相同的条件下继续煅烧，将连续排出的产品的再循环部分连续进料的共混物中的所有材料置换。
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公开(公告)号：US3939244A
公开(公告)日：1976-02-17
申请号：US309828
申请日：1972-11-27
CPC分类号： C22B34/1231 , C01G23/024 , Y02P10/23
摘要： Process for the purification of titanium tetrachloride, in which the said titanium tetrachloride is brought into contact with a purifying agent consisting of an inert support in granular form on which metallic sodium or other reducing metal has been deposited in sub-divided form, the said contact taking place either on crude liquid titanium tetrachloride with subsequent distillation to recover the purified titanium tetrachloride or on crude vaporised titanium tetrachloride with subsequent condensation to recover the purified titanium tetrachloride.
摘要翻译： 四氯化钛的纯化方法，其中所述四氯化钛与由分散形式沉积金属钠或其它还原金属的颗粒形式的惰性载体组成的净化剂接触，所述接触 在粗液四氯化钛上进行，随后进行蒸馏以回收纯化的四氯化钛或粗汽化的四氯化钛，随后冷凝以回收纯化的四氯化钛。
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公开(公告)号：US4153472A
公开(公告)日：1979-05-08
申请号：US860104
申请日：1977-12-13
CPC分类号： C01G49/06 , C09C1/24 , C01P2004/32 , C01P2004/62 , C01P2006/60
摘要： This invention describes the preparation of a red pigment of iron oxide from ferrous salts, by simultaneous reduction of organic nitro derivatives.
摘要翻译： 本发明描述了通过同时还原有机硝基衍生物来制备来自亚铁盐的氧化铁红色颜料。
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公开(公告)号：US4142915A
公开(公告)日：1979-03-06
申请号：US847488
申请日：1977-11-01
IPC分类号： C01G49/04 , C01G49/02 , C07C67/00 , C07C209/00 , C07C209/36 , C07C211/61 , C09C1/00 , C09C1/22 , C09C1/24
CPC分类号： C09C1/24 , C01P2002/30
摘要： This invention describes a process for preparing a yellow iron hydroxide pigment from inorganic ferrous salts and aromatic nitro compounds.
摘要翻译： 本发明描述了由无机亚铁盐和芳族硝基化合物制备黄色氢氧化铁颜料的方法。
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公开(公告)号：US4098869A
公开(公告)日：1978-07-04
申请号：US839471
申请日：1977-10-04
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.
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9.发明授权Manufacture of titanium dioxide by the sulphate process using nuclei formed by steam hydrolysis of TiCl.sub.4 失效通过硫酸盐工艺制造二氧化钛，使用通过TiCl的蒸汽水解形成的核（hd 4
公开(公告)号：US4021533A
公开(公告)日：1977-05-03
申请号：US617954
申请日：1975-09-29
IPC分类号： C01G23/04 , C01G23/047 , C01G23/053 , C01G23/07
CPC分类号： C01G23/047 , C01G23/0534 , C01P2004/32 , C01P2004/50 , C01P2004/62 , C01P2006/22 , C01P2006/60
摘要： A solution of active nuclei for the hydrolysis of titanium sulphate and for the rutilisation of titanium dioxide in the manufacture of titanium dioxide in tutile form in the method via sulphate is prepared by transforming titanium tetrachloride into a compound of the formula Ti(OH).sub.x Cl.sub.y, wherein x ranges from 1 to 3, y from 3 to 1 and x + y is equal to 4 by contact with steam in the vapor phase, and contacting the reaction products with an aqueous solution of sodium hydroxide to form an aqueous suspension of titanium hydroxide having a TiO.sub.2 content of from 10 to 30 grams/liter and a pH value of from 3 to 4.
摘要翻译： 通过将四氯化钛转化为式Ti（OH）xCly的化合物，制备硫酸钛水解的活性核和二氧化钛在通过硫酸盐的方法中制备二氧化钛在金属络合物中的金红石化的溶液， 其中x为1至3，y为3至1，x + y等于4，通过与气相中的蒸汽接触，并使反应产物与氢氧化钠水溶液接触以形成氢氧化钛的水悬浮液 TiO 2含量为10至30克/升，pH值为3至4。
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公开(公告)号：US4058389A
公开(公告)日：1977-11-15
申请号：US785706
申请日：1977-04-07
CPC分类号： C05D9/02 , C01C1/24 , Y10S71/903
摘要： A soil modifying composition and a concentrated solution of ammonium sulphate with a high purity degree are obtained from by-products consisting essentially of ferrous sulphate heptahydrate, obtained in the production of titanium dioxide from ilmenites by the sulphate process, by contacting solid particles of said by-products with gaseous ammonia, lixiviating the resulting product with water, thereby to recover said concentrated solution of ammonium sulphate, the dried residual solid yielding said soil modifying composition.
摘要翻译： 通过硫酸盐法从钛铁矿生产二氧化钛得到的基本上由硫酸亚铁七水合物组成的副产物得到土壤改良组合物和浓度高的硫酸铵溶液， - 用气态氨产物，将所得产物与水混合，从而回收所述浓硫酸铵溶液，干燥的残余固体产生所述土壤改性组合物。
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