专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

US4276083A Recovery of metal values from a metal bearing source of nickel and vanadium 失效
标题翻译：从镍和钒的金属轴承来源回收金属值
公开(公告)号：US4276083A
公开(公告)日：1981-06-30
申请号：US90217
申请日：1979-11-01
申请人： William K. Tolley , William C. Laughlin , William Rostoker
发明人： William K. Tolley , William C. Laughlin , William Rostoker
IPC分类号： C22B23/00 , C22B34/22 , C22B23/02 , B22F9/00
CPC分类号： C22B23/005 , C22B34/22 , Y10S502/516
摘要： Metal values may be recovered from metal bearing sources which contain at least two metals, at least one of which is in the form of a sulfide, by treating the aforesaid source with a mild oxidant at an elevated temperature in the range of from about 600.degree. to about 1500.degree. C. whereby at least one metal value is converted to an oxide and at least one metal value is converted to the elemental state which contains a relatively minor amount of sulfur. Thereafter the metal compounds may be separated and recovered by conventional means.
摘要翻译：金属值可以从含有至少两种金属的金属承载源回收，其中至少一种为硫化物形式，通过在温度为约600℃的温度下用温和的氧化剂处理上述的源至约1500℃，由此将至少一种金属值转化为氧化物，并且至少一种金属值转化为含有相对少量硫的元素态。此后，金属化合物可以通过常规方法分离和回收。

92. 发明授权

US4195986A Selective reduction of nickel laterite ores 失效
标题翻译：选择性还原镍红土矿石
公开(公告)号：US4195986A
公开(公告)日：1980-04-01
申请号：US949394
申请日：1978-10-06
申请人： Jerry D. Schulz , Bobby P. Faulkner
发明人： Jerry D. Schulz , Bobby P. Faulkner
IPC分类号： C22B23/00 , C22B23/02
CPC分类号： C22B23/005 , C22B23/021
摘要： To prepare nickel laterite ore for selective reduction of its nonferrous metal oxides, it is comminuted (preferably to 85% minus 200 mesh) and is mixed with comminuted (preferably 100% minus 65 mesh) high volatile, high ash waste coal and a non-gaseous sulfur material. Carbon content of the coal is 50% to 150% of the amount of carbon needed for stoichiometric complete reduction of nonferrous metal oxides in the ore and partial reduction of its iron oxide content. The sulfur content of the sulfur material is such that, together with the sulfur content of the coal, the weight of sulfur is 1% to 1.5% of the weight of the ore. The mixture, preferably pelletized with water, is heated out of contact with air to bring it to 550.degree. C. (requiring 20 to 25 minutes) and is then passed to an aquatic quench. Volatiles in the coal provide reducing gas, and the ash content facilitates wet grinding after quench and provides a good filter bed for subsequent leaching to recover nonferrous metal values.
摘要翻译：为了制备镍红土矿石以选择性还原其有色金属氧化物，将其粉碎（优选至85％，减去200目），并与粉碎（优选100％-65目）高挥发性，高灰分废煤和非粉煤灰混合，气态硫材料。煤的碳含量为矿石中有色金属氧化物的化学计量完全还原所需碳量的50％〜150％，其氧化铁含量部分降低。硫材料的硫含量使得与硫的硫含量一起，硫的重量为矿石重量的1％至1.5％。将混合物，优选用水造粒，加热脱离与空气的接触，使其达到550℃（需要20至25分钟），然后通入水中淬火。煤中的挥发物提供还原气，灰分有利于淬火后的湿磨，并提供了良好的过滤床，用于随后的浸出以回收有色金属。

93. 发明授权

US4069294A Hydrometallurgical recovery of metal values 失效
标题翻译：湿法冶金回收金属价值
公开(公告)号：US4069294A
公开(公告)日：1978-01-17
申请号：US679106
申请日：1976-04-21
申请人： Laurence G. Stevens
发明人： Laurence G. Stevens
IPC分类号： C01G3/14 , C22B1/00 , C22B3/00 , C22B3/14 , C22B15/00 , C22B23/00 , C22B47/00 , C01G45/00 , C01G51/12 , C01G53/12
CPC分类号： C22B47/0072 , C22B1/00 , C22B15/0021 , C22B23/005 , C22B23/0446 , C22B3/14 , C22B47/00 , Y02P10/234
摘要： In the hydrometallurgical recovery of metal values from ores and the like in which a metal bearing source is reduced in the presence of at least one additive at temperatures ranging from about 500.degree. to about 900.degree. C. and thereafter extracted, the improvement of said process comprises pretreating a portion of process tails from a preceding run with the additive prior to the reducing roast. The additive which is used to pretreat the minor portion of the feed stock may comprise that which is recovered from the roaster offgas and admixed with a portion of the tail stream from the extraction step.
摘要翻译：在从约500℃至约900℃的温度范围内在至少一种添加剂存在下金属轴承源减少的矿石等进行的金属冶金回收中，然后提取所述方法包括在还原烘烤之前用添加剂预处理来自前一运行的一部分处理尾部。用于预处理原料的次要部分的添加剂可以包括从焙烧炉废气中回收的添加剂，并与提取步骤的尾流的一部分混合。

94. 发明授权

US4044096A Sulfuric acid leaching of nickeliferous laterite 失效
标题翻译：含镍红土的硫酸浸出
公开(公告)号：US4044096A
公开(公告)日：1977-08-23
申请号：US639712
申请日：1975-12-11
申请人： Paul B. Queneau , Eddie C. Chou
发明人： Paul B. Queneau , Eddie C. Chou
IPC分类号： C01G53/10 , C22B23/00
CPC分类号： C22B23/005 , C22B23/043
摘要： The leaching efficiency of nickeliferous lateritic ore is optimized by scalping the ore to remove a coarse low-nickel fraction and provide a fine nickel-rich fraction which is then high pressure leached in a sulfuric acid solution by controlling the parameters temperature, pulp density, the rate of acid addition, leaching time, agitation rate, etc., whereby a pregnant solution is obtained with the nickel to (Fe+Al+Cr) ratio exceeding about 2.
摘要翻译：镍矿红土矿石的浸出效率通过对矿石进行抛光来优化，以除去粗的低镍馏分，并提供细的富镍馏分，然后通过控制参数温度，纸浆密度，硫酸溶液在硫酸溶液中高压浸出酸添加速率，浸出时间，搅拌速度等，从而得到镍至（Fe + Al + Cr）比超过约2的怀孕溶液。

95. 发明授权

US3985556A Reduction of laterite ores 失效
标题翻译：减少红土矿石
公开(公告)号：US3985556A
公开(公告)日：1976-10-12
申请号：US669360
申请日：1976-03-22
申请人： Richard E. Siemens , Philip C. Good
发明人： Richard E. Siemens , Philip C. Good
IPC分类号： C22B23/00 , C22B47/00 , C22B23/04
CPC分类号： C22B23/005 , C22B47/0018 , C22B47/0027
摘要： Lateritic nickel ores which also contain magnesia are subjected to a low temperature reduction using carbon monoxide as the sole reductant and are then subjected to a higher temperature heat treatment in an inert atmosphere for a time sufficient to stabilize the nickel in a readily extractable state. The reduction is accomplished at a temperature in the range of 300 to 450.degree.C and the heat treatment is carried out at a temperature above about 650.degree.C.
摘要翻译：使用一氧化碳作为唯一的还原剂，还将含有氧化镁的硫酸镍矿进行低温还原，然后在惰性气氛中进行较高温度的热处理足以稳定镍的状态。还原反应在300〜450℃的温度范围内进行，热处理温度高于约650℃。

96. 发明授权

US3925533A Process for treating nickeliferous laterite ore containing limonite and serpentine fractions 失效
$Process for treating nickeliferous laterite ore containing limonite and serpentine fractions$
标题翻译：用于处理含有褐铁矿和蛇纹石馏分的含镍红土矿的方法
公开(公告)号：US3925533A
公开(公告)日：1975-12-09
申请号：US42221473
申请日：1973-12-06
申请人： SHERRITT GORDON MINES LTD
发明人： WEIR DONALD ROBERT , EVANS DAVID JOHN IVOR
IPC分类号： C01G53/12 , C22B23/00
CPC分类号： C22B23/005 , C22B23/0446 , Y02P10/212
摘要： A method of treating nickeliferous laterite ore containing limonite and serpentine fractions to improve its responsiveness to the known reduction roast-ammonium carbonate leach process. According to the process the limonite and serpentine fractions are roasted separately under different conditions and following roasting are leached separately. After leaching the two fractions are combined and are releached together.
摘要翻译：一种处理含有褐铁矿和蛇纹石馏分的含镍红土矿石的方法，以改善其对已知的还原性硫酸铵 - 碳酸铵浸出方法的响应性。根据该方法，将褐铁矿和蛇纹石馏分分别在不同条件下焙烧，焙烧后分别浸出。浸出后，将两个级分合并并排列在一起。

97. 发明授权

US3892639A Extraction of metal values from lateritic ores 失效
标题翻译：从红土矿石中提取金属值
公开(公告)号：US3892639A
公开(公告)日：1975-07-01
申请号：US50446474
申请日：1974-09-11
申请人： US INTERIOR
发明人： LEAVENWORTH JR HOWARD W , AMEY EARLE B , DUNNING JR BEVERLY W , GABLER JR ROBERT C , GOLDSMITH CARL E
IPC分类号： C22B1/08 , C22B23/00 , C22B34/32 , C22D1/14 , C22D1/24
CPC分类号： C22B34/32 , C22B1/08 , C22B23/00 , C22B23/005 , Y02P10/216
摘要： There is disclosed a method for the extraction of metal values from laterite ores including nickel, chromium, manganese, iron and cobalt by a series of steps including chlorinating the ore in a fluidized bed with hydrogen chloride gas to form volatile metal chlorides of nickel, iron, cobalt and manganese, and a residue containing chromium, removing and condensing the volatile chlorides to effect separation, recovering the metals of nickel, cobalt and manganese and chlorine as by the use of electrolytic cells, reacting the iron chloride with oxygen to separate the iron as iron oxide; removing the residue from the fluid bed reactor for reduction with carbon to produce carbides; leaching to form salts of chromium, separating from other salts, and recovering the chromium. Also provided is a continuous method for practice of the process.
摘要翻译：公开了一种通过一系列步骤从包括镍，铬，锰，铁和钴的红土矿石中提取金属值的方法，包括在流化床中用氯化氢气体氯化矿石以形成镍，铁的挥发性金属氯化物，钴和锰，以及含有铬的残余物，除去和冷凝挥发性氯化物进行分离，通过使用电解池回收镍，钴和锰和氯的金属，使氯化铁与氧气反应以分离铁作为氧化铁; 从流化床反应器中除去残余物以用碳还原以产生碳化物; 浸出以形成铬盐，与其他盐分离，并回收铬。还提供了用于实施该方法的连续方法。

98. 发明授权

US3775095A Removal of dust particles from a dust laden stream of gases exiting from a multiple hearth furnace and reinjection of dust particles into the furnace 失效
标题翻译：从多个心脏炉排出的气体排出的尘埃颗粒物去除灰尘颗粒并将灰尘颗粒重新吸入火炉
公开(公告)号：US3775095A
公开(公告)日：1973-11-27
申请号：US3775095D
申请日：1971-06-17
申请人： SHERRITT GORDON MINES LTD
发明人： GULYAS J , O KANE P
IPC分类号： C22B23/00 , F27B9/24
CPC分类号： C22B23/005 , F27B9/24 , Y02P10/143
摘要： Ore is fed into the top of a multiple hearth furnace and, as it travels downwardly through the furnace, it is reduction roasted by means of a rising stream of hot reducing gases. Fine ore particles picked up by the combustion gases within the furnace and exiting therewith are removed from the gases and reinjected into the furnace at a point at which the degree of reduction of the particles approximates the degree of reduction of the ore which passes downwardly at the point. To prevent the injected particles from being carried upwardly by the partial combustion gases, the particles are injected in the form of a continuous plug.
摘要翻译：矿石被送入多层炉的顶部，并且当其向下通过炉子时，通过上升的热还原气流进行还原焙烧。由炉内的燃烧气体吸收并与其离开的细矿颗粒从气体中除去，并在颗粒的还原程度接近于在下述过程中向下通过的矿石的还原程度的点处重新注入炉中点。为了防止注入的颗粒被部分燃烧气体向上运送，颗粒以连续塞的形式注入。

99. 发明授权

US3232743A Method of agglomerating magnesiumsilicate nickel ores 失效
标题翻译：聚集硅酸镁镍矿石的方法
公开(公告)号：US3232743A
公开(公告)日：1966-02-01
申请号：US39462764
申请日：1964-09-04
申请人： POLYSIUS GMBH
发明人： HANNES ANNA
IPC分类号： C22B1/24 , C22B23/00
CPC分类号： C22B1/2413 , C22B23/005

100. 发明授权

US2978317A Method of processing lateritic nickeliferous ores 失效
标题翻译：加工红土镍矿石的方法
公开(公告)号：US2978317A
公开(公告)日：1961-04-04
申请号：US80203559
申请日：1959-03-26
申请人： TOKUICHI TAKAKUWA
发明人： TOKUICHI TAKAKUWA
IPC分类号： C22B23/00 , C22B23/02 , C22B34/32
CPC分类号： C22B23/005 , B26D2001/0046 , B26D2001/0053 , B26D2001/0066 , C22B23/023 , C22B34/32

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式