The production of calcium magnesium phosphate fertilizer by blast furnace method has certain requirements on the particle size of phosphate rock and flux entering the furnace. Screening off fine ore less than 10mm is one of the important prerequisites for smooth operation, high yield, stable yield and low consumption of blast furnace. However, at present, the content of fine ore in the raw phosphate ore is as high as 20-40%, so the treatment of fine ore has become an urgent problem to be solved in the current phosphate fertilizer plant.

HPS mixed pellet sintering belongs to the small pellet sintering process, which is to mix iron ore powder, returned ore, flux and fuel with water to make small balls with a diameter of 5-10mm, wrap a certain proportion of solid fuel on the surface of the small balls, and then sinter. Compared with the common sintering method, the small pellet sintering method has increased the process links of strengthening granulation and rolling pulverized coal outward.

Mixed granulation process is a very important link in sintering production process. High intensity mixing is to mix all kinds of materials in the batching process evenly. Granulation is to make materials into mixed materials with appropriate particle size and good air permeability.

Nibrasco briquetting plant was completed and put into production in August 1978. This article will describe the process flow of each section of the factory.

This article talks about the material and binder selection, equipment, testing method of sponge iron power. The proper parameters are discussed in this paper.

We are talking about high pressure briquette machine here with its stress features, but also the issues cause bearing windage and solutions for it.

China is rich in iron ore resources, but most of them are low-grade ores, including many hematite, limonite, siderite, etc., which are characterized by low iron grade, fine crystal size, compact distribution with gangue, and difficult dissociation of monomers. Therefore, it is difficult to use conventional beneficiation methods for separation and cannot be reasonably utilized. With the rapid development of iron and steel industry, there are fewer and fewer rich ores available for utilization. Therefore, it is of great significance to effectively develop and utilize low-grade iron ore and complex symbiotic ores.

Nickel, as an important strategic metal material, has various advantages such as corrosion resistance, oxidation resistance, high temperature resistance, high strength and good ductility, and is widely used in modern industry. Nickel is mainly used to produce stainless steel. 65% of the world's total nickel consumption is used to produce stainless steel and 12% is used to produce heat-resistant alloys and non-ferrous metal alloys.

It is necessary to ensure that foamed acid (foamed dilute sulfuric acid formed after the liquid formed by mixing concentrated sulfuric acid, water and foaming agent is foamed by compressed air) fully wetts the lint on the surface of cotton seed, The mixing quality of cotton seed and foamed acid is directly related to the consumption of concentrated sulfuric acid, water and foaming agent, and affects the productivity of subsequent drying and defoiling equipment and the amount of residual acid in seeds.

The stirring system of VKM-5 Twin-shaft differential vertical kneader consists of mixing kettle, solid paddle and hollow paddle. The inner wall of the mixing kettle is a hollow thermal insulation layer, which is filled with 30 ℃ constant temperature water provided by the water supply system. The hollow paddle and the solid paddle are vertically installed.