公开(公告)号：US3755113A

公开(公告)日：1973-08-28

申请号：US3755113D

申请日：1971-10-20

Applicant: NIIZM

Inventor： ENTSEV I ,  KUNTSHEV N ,  HARALAMPLEV G ,  PETROV D

IPC: C25C1/08 ,  C22D1/14

CPC classification number: C25C1/08 ,  Y10S204/09

Abstract: Method for electrorefining of nickel at high current densities wherein the process is carried out by use of reverse current with a duration of the reversal electrode polarity of 3.0 to 8.0 percent of the total current period and a frequency of reversal of the poles of two to six times in a minute. The process is preferably carried out at a temperature of the solution of 50* to 80*C and with an electrolyte consisting substantially of nickel from 70 to 100 gr/l, as NiSO4; sodium chloride from 40 to 80 gr/l; sodium sulphate from 40 to 70 gr/l; and boric acid from 3 to 20 gr/l. The electrolyte is continuously agitated during the process; the process may advantageously be practiced at high current densities by apparatus capable of thoroughly and continuously circulating the electrolyte.

Abstract translation: 用于以高电流密度对镍进行电解精炼的方法，其中所述方法通过使用具有反转电极极性持续时间为总电流周期的3.0-8.0％的反向电流和两至六极的反转频率来进行 几分钟后。 该方法优选在50至80℃的溶液温度和基本上由70至100g / l的镍组成的电解液作为NiSO 4进行; 氯化钠从40至80克/升; 硫酸钠从40至70gr / l; 硼酸为3〜20gr / l。 在该过程中电解液持续搅动; 该方法可以有利地通过能够彻底地和连续循环电解质的设备在高电流密度下实施。

公开(公告)号：US3799850A

公开(公告)日：1974-03-26

申请号：US17878771

申请日：1971-09-08

Applicant: NIIZM

Inventor： ENTSHEV I ,  KINCHEV N ,  SMILENOV T ,  STOJANOV J ,  HARALAMPIEV G ,  ALEXANDROV A

IPC: C25C1/16 ,  B01K3/00 ,  C22D1/22

CPC classification number: C25C1/16 ,  Y10S204/09

Abstract: A METHOD FOR OBTAINING ZINC FROM ITS SULFURIC ACID SOLUTIONS BY AN ELECTROLYTIC PROCESS IN WHICH THE CURRENT FLOW BETWEEN THE ELECTRODES IS REVERSED FOR FROM 0.3 TO 1.2% OF THE ELECTRICAL CURRENT CYCLE AND THE FREQUENCY OF CHANGING THE SIGN OF THE ELECTRODES IS FROM 2.0 TO 6.0 TIMES A MINUTE.