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Key Technology of Cold Briquetting Production

Key Technology of Cold Briquetting Production

2021-03-15

In order to make the large and medium-sized reduction electric furnaces of ferroalloy run better, it is required that the burden has proper fragmentation and ensures good air permeability. At present, the supply of high-quality lump burden which can be directly fed into the furnace is becoming increasingly tight. In order to adapt to this situation, some manufacturers at home and abroad have adopted various lump technologies to effectively utilize fine ore and concentrate and obtained better smelting indexes.

Treatment Technology of Converter Sludge

Treatment Technology of Converter Sludge

2021-03-04

Firstly, the converter sludge is mixed after batching and then roasted in a rotary chamber. (The rotation chamber can determine the transformation according to the set constant temperature time, which ensures that the chemical composition of the cooling ball meets the standard requirements. At an appropriate temperature, roasting in the rotary chamber may remove most harmful elements in sludge.)

Application of Vanadium Titanium Iron Concentrate Pelletizing

Application of Vanadium Titanium Iron Concentrate Pelletizing

2021-03-04

According to the different subsequent smelting processes, vanadium-titanium iron concentrate pellets determine their respective application fields. Vanadium-titanium iron concentrate acid oxidation pellets are mainly used in blast furnace smelting, blast furnace burden protection and gas-based shaft furnace reduction, but vanadium-titanium iron concentrate carbon pellets are mainly used in coal-based direct reduction.

LT dust Cold Briquette

LT dust Cold Briquette

2021-03-04

According to comprehensive analysis, LT dust can be reused while reducing environmental pollution by returning to converter for smelting after being lumped nearby, which is the best choice for its utilization mode. At present, there are two main lumping methods of LT dust: dry hot pressing and wet cold pressing, but both have obvious defects. If the advantages of the two can be combined, the problem can be solved. The new process mainly has the following main technical problems to be solved:

Vanadium Titanium Iron Concentrate Briquettes

Vanadium Titanium Iron Concentrate Briquettes

2021-02-22

The main elements of vanadium-titanium magnetite in Panxi area of China are iron, vanadium and titanium, and also contain rare elements such as cobalt, nickel and chromium. Ore has the characteristics of low iron and high titanium, multi-symbiosis and complex structure. Its resources are extremely rich. Its total reserves account for 1/4 of the world's total reserves of vanadium-titanium magnetite and 95% of the country's reserves. Among them, titanium and vanadium account for 35.17% and 7.3% of the world's total reserves respectively.

Cold Briquette Technology of Converter LT Dust

Cold Briquette Technology of Converter LT Dust

2021-02-22

Dust removal methods in the converter steelmaking process can be divided into the wet method and dry method. The traditional wet purification system is as follows: after the flue gas is treated by water spraying, the smoke dust is removed, and the sewage with smoke dust is treated by separation, concentration, and dehydration to obtain converter sludge, and the purified gas is recycled. The new dry purification system is that the flue gas is cooled and quenched and tempered, and then enters the cylindrical electrostatic precipitator for purification, and the captured dust is the primary dust of the dry converter (LT dust for short).

Treatment and Utilization of Converter Sludge

Treatment and Utilization of Converter Sludge

2021-02-22

Steelmaking converter sludge is the product of wet dust removal of flue gas produced by converter steelmaking. Large iron and steel enterprises at home and abroad attach great importance to the comprehensive research and utilization of steelmaking converter sludge.

Gas-based direct reduction iron （DRI）

Gas-based direct reduction iron （DRI）

2021-02-01

Gas-based direct reduction iron (DRI), which has been commercialized, is made from natural gas or coal. In recent years, with the global attention to carbon dioxide emissions, active research has been carried out on the low carbonization of DRI processes, mainly carbon dioxide removal in existing commercial DRI processes or the use of renewable energy to produce reducing gas.

Non-blast furnace ironmaking

Non-blast furnace ironmaking

2021-02-01

The tunnel kiln process is relatively simple, the technical content is low, and the raw materials, reducing agents, and fuels are easy to solve. The process has strong practicability, small early investment, and is suitable for small-scale production. It is a metallurgical reduction production process commonly used in the powder metallurgy industry. However, tunnel kilns have a small single-unit production capacity, low degree of automation, high labor intensity, high energy consumption, and large environmental pollution.

Horizontal double-shaft paddle mix (3)

Horizontal double-shaft paddle mix (3)

2021-02-01

In the first experiment, 200L maltodextrin, 50L 20-40 mesh citric acid particles and 0.01% carmine were mixed in a biaxial paddle mixer. When mixed for 30, 60, 90, 120, 150, 180 and 210s, the samples were divided into upper and lower layers according to diagonal method, and 18 samples were taken each time. The absorbance of carmine was detected and the coefficient of variation CV was calculated.

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