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1. 发明授权

US5411719A Production of acid soluble titania 失效
标题翻译：生产可溶性二氧化钛
公开(公告)号：US5411719A
公开(公告)日：1995-05-02
申请号：US127296
申请日：1993-09-24
申请人： Michael J. Hollitt , Brian A. O'Brien
发明人： Michael J. Hollitt , Brian A. O'Brien
IPC分类号： C22B34/12 , C22B1/02 , C01G23/047 , C01G23/08
CPC分类号： C22B34/1236
摘要： Accordingly the present invention provides a process for producing acid soluble titania which process comprises the steps of:(i) adding a manganese or magnesium compound to a titaniferous mineral if the mineral does not contain sufficient manganese and magnesium to satisfy the following relationship: ##EQU1## where a represents the percentage by weight of MgO contained in the mineral,b represents the percentage by weight of MnO contained in the mineral, andd represents the percentage by weight of TiO.sub.2 contained in the mineral;(ii) heating the titaniferous mineral in the presence of a reductant at a temperature and for a time sufficient to permit contained iron to be reduced to its metallic form and contained titania to convert to an acid soluble form without significant accretion of the mineral occurring;(iii) cooling the product of step (ii); and(iv) subjecting the product of step (iii) to an aqueous chemical treatment to substantially remove iron from the mineralwherein the manganese or magnesium compound is an oxide or is capable of decomposing to an oxide under reaction conditions.
摘要翻译：因此，本发明提供了一种生产酸溶性二氧化钛的方法，该方法包括以下步骤：（i）如果矿物不含足够的锰和镁以满足以下关系，则将锰或镁化合物加入到含钛矿物中：其中a表示矿物中所含的MgO的重量百分数，b表示矿物中所含的MnO的重量百分比，d表示矿物中所含的TiO 2的重量百分比; （ii）在还原剂存在下，在足以允许含铁的还原成其金属形式并含有二氧化钛以转化为酸溶性形式而不显着沉积矿物的温度和时间下加热含钛矿物; （iii）冷却步骤（ii）的产物; 和（iv）使步骤（iii）的产物进行水性化学处理以从矿物中基本上除去铁，其中锰或镁化合物是氧化物或在反应条件下能够分解成氧化物。

2. 发明授权

US5427749A Production of synthetic rutile 失效
标题翻译：合成金红石的生产
公开(公告)号：US5427749A
公开(公告)日：1995-06-27
申请号：US927665
申请日：1992-11-02
申请人： Michael J. Hollitt , Brian A. O'Brien , Ian E. Grey
发明人： Michael J. Hollitt , Brian A. O'Brien , Ian E. Grey
IPC分类号： C22B3/06 , C22B3/08 , C22B5/10 , C22B5/12 , C22B5/14 , C22B9/05 , C22B34/12 , C01G23/00 , C01G25/00 , C01G27/00 , C22B34/10
CPC分类号： C22B5/14 , C22B3/06 , C22B3/065 , C22B3/08 , C22B34/1204 , C22B34/1209 , C22B34/1213 , C22B34/1231 , C22B34/1236 , C22B34/1245 , C22B5/10 , C22B5/12 , C22B9/05 , Y02P10/23 , Y02P10/234
摘要： The specification describes a process for producing synthetic rutile from a titaniferous ore or concentrate. The process involves three basic steps which are reduction, removal or iron by leaching or aeration and removal of other impurities by leaching in a solution of a strong mineral acid such as hydrochloric acid or sulphuric acid. The conditions of reduction are controlled to promote the formation of metallic iron, a major rutile phase and a minor impurity bearing phase. The minor impurity phase may be a metatitanate, an anosovite or a pseudobrookite. However, formation of a metatinatate is normally preferred. Suitable reductants include carbonaceous materials or hydrogen bearing gases such as natural gas or synthesis gas. The process is capable of removing more than 80% of each of the contained iron magnesium and manganese remaining as oxides after reduction. Substantial proportions of contained aluminum can also be removed.
摘要翻译： PCT No.PCT / AU91 / 00069 Sec。 371日期：1992年11月2日 102（e）日期1992年11月2日PCT 1991年3月1日PCT公布。公开号WO91 / 13180 PCT 日期1991年9月5日。本说明书描述了从含钛矿石或精矿生产合成金红石的方法。该方法包括三个基本步骤，即通过在强无机酸（如盐酸或硫酸）的溶液中浸出而浸出或曝气除去其它杂质，还原，除去或铁。控制还原条件以促进形成金属铁，主要金红石相和少量杂质负载相。次要杂质相可以是偏钛酸盐，非球形矿物或假铁矿石。然而，通常优选形成metatinate。合适的还原剂包括碳质材料或含氢气体如天然气或合成气。该方法能够除去残留在还原后的氧化物中的每种含有的铁镁和锰的80％以上。还可以除去大量的含铝。

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