​Currently, most of the existing direct reduced iron production processes in the world use the briquetting process to solve the problems of DRI such as high powder content, low density, flammability, large dust, and insufficient latent heat utilization. Briquetting is the method of applying mechanical pressure to agglomerate the pellets or powdered DRI produced by direct reduction into dense closed blocks. Briquetting is divided into cold pressing process and hot pressing process.

Given the current problem of limestone solid waste treatment in steel mills, two briquetting treatment techniques and methods are introduced. It is suitable for the recycling of limestone mud cake in steel mills to realize the recycling of dust and sludge generated in its production process.

Manganese powder ore generally refers to fine-grained concentrates obtained by beneficiation, and fine-grained materials containing manganese such as soot and ash obtained from smelting manganese ferroalloys in blast furnaces and electric furnaces. The briquette method is one of the manganese powder ore agglomeration methods.

The Pellet method represents the development direction of fine powdery iron concentrate, bentonite as a dry binder plays a decisive role in the process of caking, therefore, it is of great significance to study the bonding mechanism of bentonite to iron ore pellets.

As the main raw material for direct reduction of rotary hearth furnace, the cold consolidated carbon briqued coal needs to go through transportation, distribution, reduction, discharge and other processes in the production process of rotary hearth furnace, so its performance in all aspects affects the smooth production and efficiency of rotary hearth furnace. In this paper, syrup was used as binder, vanadium titanium magnetite and pulverized coal were used as raw materials to study the influence of different binder ratio, forming pressure and water content on the cold consolidation performance of carbon pellet.

There is a shortage of scrap in steelmaking around the world. Due to the small domestic self-sufficiency of scrap in China and the unstable quality of scrap available, it is necessary to find alternatives to scrap.

Ore powder briquette machine can be used to press pulverized coal, iron powder, coking coal, aluminum powder, iron filings, iron scale, carbon powder, carbon powder, slag, gypsum, tailings, sludge, kaolin, activated carbon, coke powder, and other powders, powder materials, waste materials, and waste residues. It is widely used in refractory, power plant, metallurgy, chemical industry, energy, transportation, heating, and other industries. It is energy-saving, environment-friendly, convenient for transportation, improves the utilization rate of waste materials, and has good economic and social benefits.

Cold-solidified briquetting is the main method for steelmaking sludge treatment in metallurgical enterprises at present.

In order to make the large and medium-sized ferroalloy reduction electric furnace run better, it is required that the burden should have proper fragmentation and ensure good air permeability. At present, the supply of high-quality lumpy burdens which can be directly used in the furnace is becoming increasingly tight. In order to adapt to this situation, some manufacturers adopt various lumping technologies and use fine ore and concentrate to obtain better smelting indexes. Among them, high-pressure briquette machine pelletizing technology has become a new development direction of ferroalloy pelletizing technology in recent years because of its simple process, fuel-saving, applicability to fine ore, and a wide variety.

"Cold-solidified briquettes" made by high-pressure briquetting machine using sludge, dust removal ash, and iron scale produced by steelmaking as raw materials, adding lime, and using organic glue as a binder.