公开(公告)号：US3725039A

公开(公告)日：1973-04-03

申请号：US3725039D

申请日：1970-12-10

Applicant: BASIC INC

Inventor： JEPSEN T

IPC: C22B23/02 ,  C22B1/08

CPC classification number: C22B23/021

Abstract: 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.

公开(公告)号：US3720308A

公开(公告)日：1973-03-13

申请号：US3720308D

申请日：1970-04-20

Applicant: BASIC INC

Inventor： JEPSEN T

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

CPC classification number: B03B13/005 ,  B03B5/30

Abstract: 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.

Abstract translation: 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。