Preparation method of nickel aminosulfonate solution

Abstract

A preparation method of a nickel aminosulfonate solution is characterized in that industrial-grade nickel sulfate or nickel chloride used as a raw material undergoes an electrolytic deposition technology to prepare a high-purity electrolytic nickel plate, the high-purity nickel plate is used as an anode plate in the preparation of nickel aminosulfonate by a second diaphragm electrolysis technology, solid sulfamic acid is regularly supplemented in a cathode area in the electrolysis process to make the fluctuation amplitude of the cell voltage in the whole electrolysis process be very small andno side reactions occur, and an ionic membrane adopts an anionic heterogeneous exchange membrane to make the sulfamic acid permeate through the ionic membrane and enter the anode area, so smooth proceeding of an electrochemical reaction is carried out, the sulfate content of the nickel aminosulfonate solution obtained through electrolysis is low, no organic matters are residual, and no sodium ionsare introduced. The product prepared in the invention has a high purity, the production process is environmentally friendly, the production cost is low, and the method is a preparation method of thenickel aminosulfonate solution for electroplating the diamond deserves to be promoted.

Description

technical field [0001] The invention belongs to the field of preparation methods of nickel salts, and in particular relates to a preparation method of nickel sulfamate solution. Background technique [0002] With the formulation and implementation of the national new energy strategic plan, the development and utilization of solar energy has become more and more important. In 2017, the annual installed capacity of the global photovoltaic market is expected to exceed 100GW for the first time, with an annual growth rate of more than 25%. Among them, China ranks the market leader with an installed capacity of about 50GW, and the demand for large-area silicon wafers for photovoltaic power generation continues to increase. Due to the maturity of semiconductor manufacturing technology, the manufacturing cost of other aspects of silicon wafers continues to decline, but the cutting cost of silicon wafers for solar cells has always been high, accounting for about 30% of the total manu...

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Problems solved by technology

Method (3) The trace extractant remaining in the nickel sulfamate solution prepared by the extraction method is difficult to remove, and a large amount of activated carbon is required for adsorption treatment. In addition, the waste water produced by saponification is also very large, and the environment is not friendly. These three The nickel sulfamate prepared by the method has a relatively high frequency of quality accidents in the application of nickel plating on diamond cutting wires (because the organic matter exceeds the standard, the sulfate, etc. exceed the standard and cause the internal stress of the coating to be large so that the product is unqualified)

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