Clean, energy-saving and environment-friendly chromium compound manufacturing technology by utilizing carbon ferrochrome

Abstract

The invention relates to a clean, energy-saving and environment-friendly chromium compound manufacturing technology by utilizing carbon ferrochrome. The clean, energy-saving and environment-friendly chromium compound manufacturing technology disclosed by the invention is advanced, energy-saving and environment-friendly, fuel coal, high temperature and high pressure are not needed, products such as chromium compound, pigment, new energy and silicon carbon battery new materials can be produced in one time by taking ferrochrome as a raw material and adopting a liquid phase method, a series of new high-end industry chains can be formed, and the situations of single application and simple production of original products can be completely changed; a backward production technology which can generate high pollution during original chromate compound production and has great harm to the environment can be changed, and an energy-saving, environment-friendly and high-efficiency development way is guided for chromium compound production; the diversified development and application field of ferrochrome industry are greatly expanded, the international competitiveness of enterprises is greatly enhanced, and important significance is obtained in promoting the optimization, the upgrading and the development of national industries.

Description

technical field [0001] The invention relates to a clean, energy-saving, green and environment-friendly manufacturing process of carbon ferrochrome, which belongs to the technical field of manufacturing chromium compounds, iron-based pigments, new materials and new energy sources using metallurgical products as raw materials. Background technique [0002] With the acceleration of international economic integration, the competition of enterprises is becoming increasingly fierce. To survive and develop in the fierce international competition, enterprises must adjust and optimize the industrial structure, change the mode of economic development, accelerate the elimination of backward production capacity, and guide and promote resources to advantage The gathering of industries and high-tech promotes the optimization and upgrading of my country's industrial structure. Enterprises should increase investment in research and development from a global perspective, improve independent i...

AI Technical Summary

Problems solved by technology

[0006] At present, chromium salt enterprises at home and abroad are completely using calcium or less calcium roasting methods to produce chromate, which produces a large amount of chromium slag, which is expensive and difficult to deal with, which seriously restricts the development of enterprises and industrial upgrading.

Some new processes encouraged by our country cannot be popularized and applied: 1. The potassium-based sub-molten salt liquid-phase oxidation method invented by the Institute of Process Research, Chinese Academy of Sciences cannot be applied industrially due to the high reaction temperature, large amount of potassium alkali, difficult manufacturing of reaction vessels, and high cost. ; 2. "The process of preparing soluble chromate by three-compartment catalytic oxidation" invented by Chongqing Minfeng Chemical Co., Ltd., application number: 201110261747.9, publication number: CN102320661A, publication date: 2012.01.18, the world's largest high manganese "A preparation process for producing chromate in a continuous liquid-phase oxidation reaction tower" invented by Chongqing Changyuan Chemical, a potassium phosphate manufacturer, application number: 201110035642.1, publication number: CN102139921A, publication date: 2011.08.03, these methods require high temperature High pressure, a large amount of alkali is required in the production, the requirements for the container are extremely high, the cost of the reaction container is high, the damage to the container is great during the production process, and it is easy to cause safety hazards

Due to the high production cost, there is only a single product, sodium chromate, and at the same time, the toxic chromium slag is difficult to deal with, and it is difficult to industrialize production