Magnesium Industry: Inner Mongolia JS project

Project background:

In the current increasingly competitive industrial and chemical industry, achieving energy saving and improving output and quality has become a key goal of production line optimization.

Our company and Inner Mongolia JS magnesium industry reached a cooperation, and jointly committed to the original production line of calcined white energy saving and consumption reduction and improve the overall transformation of production and quality.

Original production line:

Fuel: bituminous coal (0.5 t /h) + coke oven gas (1500m³/h, Max.)

Product: Calcined white

Capacity: 7.5 tons/hour

Kiln type: 3.2×60 m

Centrifugal fan: approx. 25000m³/h (unused)

Primary fan: 118m³/min

Cooling method: single cylinder cooling

Transformation requirements:

After the transformation, the burner can realize the single burning of coke oven gas or pulverized coal, and the mixed burning of coal and gas. The amount of coke oven gas is not less than 1000m³/h, and on the basis of the standard of calcined white, the production capacity is increased by 10%, that is, the production capacity is not less than 9 tons/hour.

Design concept:

First, in view of the lack of air in the kiln caused by the absence of secondary air in the original coal pipe, our company innovatively added a air supply channel outside the burner in this transformation. With a high performance centrifugal fan, forced air supply is achieved to ensure adequate oxygen supply in the kiln and optimize combustion efficiency.

Second, in view of the limitations of the original burner single gas channel design, especially the problem of channel blockage and gas reduction easily caused by the use of coke oven gas, this transformation has made major adjustments. We upgraded the gas channel from a single channel to a dual channel design, each channel outlet is equipped with a different area and Angle of the wing. This improvement makes it possible to flexibly choose different channels according to actual needs in the production process to meet the stringent requirements of customers for flame morphology and production efficiency.

Other key changes include:

 One precision regulating valve is added to the gas pipeline to realize the precise control of gas flow.

 The height of the original trolley is adjusted accordingly to ensure a perfect match with the reformed combustion system, and further improve the overall operating efficiency and stability of the burner.

Transformation effect:

After two days of professional commissioning, all the indicators of the calcined white production line have reached the customer's expected standards, and the neutralizing mechanical and electrical burners have created significant economic benefits for customers with their excellent performance.

The successful completion of this project not only shows the strength of our company in technological innovation and industrial upgrading, but also vividly interprets and practices the concept of energy saving and high quality development.