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45 条记录 (耗时 0.013 秒)

    Segregation roast process for the recovery of nickel from lateritic ore
    6.
    发明授权
    Segregation roast process for the recovery of nickel from lateritic ore 失效
    从红土矿石中回收镍的分离焙烧工艺

    公开(公告)号：US3904400A

    公开(公告)日：1975-09-09

    申请号：US37069173

    申请日：1973-06-18

    申请人： BASIC INC

    发明人： ZEGERS THEODOOR W ,  GOLDBERGER WILLIAM M ,  JEPSEN TAGE L B ,  LEE HARLEY C ,  PEARSON EDWARD P

    IPC分类号： C22B23/00 ,  C22B23/02

    CPC分类号： C22B23/00 ,  C22B23/021

    摘要： Lateritic ore is mixed with a chloridizing agent and a carbonaceous reductant to form an ore mixture for segregation roasting. The ore mixture is roasted at a temperature in the range of 1600*-2000*F. for a time duration of 0.5 to 2 hours in the presence of a reducing atmosphere provided by a mixture of CO-CO2 or H2-H2O gases to form a calcine containing nickel alloyed with iron. The calcine is subjected to a suitable treatment to recover the nickel therefrom.

    摘要翻译： 将红土矿石与氯化剂和碳质还原剂混合以形成用于分离焙烧的矿石混合物。 在由CO-CO 2或H 2 -H 2 O气体的混合物提供的还原气氛的存在下，将矿石混合物在1600°-2000°F的温度范围内烘烤0.5至2小时，形成 含有与铁合金的镍的煅烧物。 对煅烧物进行适当的处​​理从其中回收镍。

    Recovery of nickel concentrates from laterite ores
    7.
    发明授权
    Recovery of nickel concentrates from laterite ores 失效
    镍矿石中镍矿浓度的恢复

    公开(公告)号：US3725039A

    公开(公告)日：1973-04-03

    申请号：US3725039D

    申请日：1970-12-10

    申请人： BASIC INC

    发明人： JEPSEN T

    IPC分类号： C22B23/02 ,  C22B1/08

    CPC分类号： C22B23/021

    摘要： A PROCESS IS DISCLOSED FOR THE RECOVERY OF NICKEL CONCENTRATES FROM LATERITE ORES BY SEGREGATION ROASTING WHEREIN THE ORE AFTER DRYING FOR REMOVAL OF AT LEAST PART OF THE FREE WATER IS MIXED WITH A CHLORIDIZING AGENT AND A CARBONACEOUS REDUCTAND, SUCH AS COAL OR COKE, BEFORE ROASTING. THIS MIXTURE IS HEATED TO TEMPERATURES OF 900* TO 1050*C. WHILE MAINTAINING A SLIGHTLY REDUCING ATMOSPHERE. PREFERRED CHLORIDIZING AGENT IS A MIXTURE OF SODIUM CHLORIDE AND CALCIUM OXIDE. THE RESULTING SINTER IS SUBJECTED TO SUITABLE CONCENTRATION FOR FINAL NICKEL RECOVERY.

    Heavy liquid separation of brucite from associated minerals of brucitic ores
    8.
    发明授权
    Heavy liquid separation of brucite from associated minerals of brucitic ores 失效
    重金属离子从相关矿物中分离

    公开(公告)号：US3720308A

    公开(公告)日：1973-03-13

    申请号：US3720308D

    申请日：1970-04-20

    申请人： BASIC INC

    发明人： JEPSEN T

    IPC分类号： B03B5/30 ,  B03B13/00 ,  B03B1/02 ,  B03D1/00

    CPC分类号： B03B13/005 ,  B03B5/30

    摘要： Brucite in finely divided condition is collected as a high grade concentrate of brucitic ores and other magnesium hydroxides by selective temperature control of heavy liquid media during continuous treatment. Ore is initially assayed to determine the specific gravity of its brucite content and methylene bromide as heavy liquid media will be used at its usual specific gravity of 2.48 at ambient temperature. If higher grade product is desired, changes in temperature of media are developed to obtain density drop to 2.40, for example. To change back to normal production media temperature is adjusted and no change in media composition is required.

    摘要翻译： 在连续处理过程中通过选择性温度控制重质液体介质，收集细分条件下的水镁石作为高品位的高岭土矿物和其他氢氧化镁的浓缩物。 最初测定矿石以确定其水镁石含量和二溴甲烷的比重，因为重质液体介质将在环境温度下的常规比重为2.48时使用。 如果需要较高级别的产品，则开发介质的温度变化以获得例如2.40的密度下降。 要恢复正常生产，调节介质温度，不需要改变介质组成。