Process method for producing high-grade nickel matte from ferronickel blocks

Abstract

The invention discloses a process method for producing high-grade nickel matte from ferronickel blocks, relates to the technical field of production of high-grade nickel matte, and aims to solve the problems that nickel sulfide ore resources for producing high-grade nickel matte particles are limited, the process for producing the high-grade nickel matte particles from the nickel sulfide ore is relatively complicated, and the high-grade nickel matte has more impurities in the prior art. The method comprises the following steps that ferronickel blocks are fed into an electric arc furnace and smelted; molten ferronickel iron is fed into a converter for vulcanization and blowing; liquid sulfur and quartzite flux are added into the converter in the vulcanization and blowing process; after ferronickel is vulcanized to form nickel sulfide and ferrous sulfide, iron oxide elements are combined with quartzite to form fayalite; and finally, molten high-grade nickel matte melt is left in the furnace, and the high-grade nickel matte is granulated through water quenching to form high-grade nickel matte particles. According to the method, the high-grade nickel matte particles are directly formed after the high-grade nickel matte is subjected to water quenching granulation, so that the high-grade nickel matte particles can be produced from rich ferronickel blocks, and the production process is simpler.

Description

technical field [0001] The invention relates to the technical field of production of high-nickel matte, in particular to the technical field of a process method for producing high-nickel matte from ferronickel blocks. Background technique [0002] At present, the main products produced by laterite mines are ferronickel products. Ferronickel is a nickel-iron alloy with a nickel content of 20% to 60%. The melting point of ferronickel is 1430 to 1480 degrees, and the density is 8.1 to 8.4. The main component of ferronickel is Nickel and iron, and iron alloy containing a small amount of cobalt, the fracture of the mineral is jagged, uncommon, it is produced in lumps and granular aggregates, it is iron gray, dark gray or black, streak iron gray, opaque, and the fresh surface is metallic luster. Ferronickel also contains impurities such as carbon, silicon, sulfur, phosphorus, chromium, and copper, and is mainly used as a nickel additive for steelmaking and cast iron. [0003] The...

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Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the limited resources of nickel sulfide ore that can produce high-nickel matte particles in the prior art, and the process of producing high-nickel matte particles through nickel sulfide ore is relatively complicated. The process of producing high-nickel matte from iron blocks is to convert ferronickel mainly for the stainless steel market into urgently-needed high-nickel matte, and then water-quench and granulate the high-nickel matte to directly form high-nickel matte particles, which can be obtained through resources Rich nickel-iron lumps produce high-nickel matte particles with less impurity content, and the process of producing this high-nickel matte particles is simpler

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