Comprehensive utilization technique and system for soft-burned dolomite fine powder
A technology for lightly burning dolomite and fine powder is applied in the field of technology, which can solve the problems of wasting limited resources and environmental pollution, and achieve the effects of saving resources, reducing investment and energy consumption, and ensuring molding quality.
Inactive Publication Date: 2009-11-18
KUNMING IRON & STEEL GRP CO LTD
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Problems solved by technology
Not only waste limited resources, but also cause environmental pollution
Method used
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[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] The conveyor 1 below the discharge port of the shaft kiln is connected with the hoist 2 through a slide pipe. The hoist 2 is a chain hoist, and the chain 21 inside is provided with hoppers 22 at intervals, such as image 3 , Figure 4 , the discharge port of the elevator 2 and the three-fork feeding pipe 31 with the flap 3 and the tube screen 4 on it, the upper end of the flap 3 is suspended, the lower end is connected with the pipe wall through the hinge shaft 32, and the other end of the hinge shaft 32 extends to the outside of the pipe Link to each other with handle 33 afterward, operating handle 33 can make turning plate 3 rotate around hinge shaft 32, as Figure 5 , Image 6 , the three-fork feeding pipe 31 is connected to the conveyors 5 and 6 respectively, the conveyor 5 is connected to the block silo 14, the conveyor 6 is connected to the powder mixing...
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The invention provides a process and system for comprehensively utilizing light-burned dolomite fine powder. The dolomite powder calcined by the shaft kiln, the dust after dedusting the flue gas during the calcining process, and the under-sieved powder after sieving the dolomite can be directly pressed into shape and sent to steelmaking for use, so that they can be fully utilized and save energy. It saves precious resources and effectively avoids its pollution to the environment. In addition, taking advantage of the easy separation of light-burned dolomite balls and fine powder, a pipe screen is installed on the three-prong feeding pipe, so that the fine powder produced during the conveying into balls can be recycled and reused, and at the same time, the investment in the screening device can be reduced and energy consumption. In addition, a miniature attached vibrator is installed at the outlet of the powder silo to ensure the uniformity and smoothness of feeding, so that the powder from the subsequent screw conveyor enters the ball forming machine evenly, ensuring the molding quality of the powder.
Description
technical field [0001] The invention relates to a process method and system, in particular to a process method and system for comprehensive utilization of light-burned dolomite fine powder. Background technique [0002] Light-burned dolomite is an indispensable auxiliary material in steelmaking production. Using it can further remove impurities in molten steel, and ultimately improve steel quality, which is beneficial to slag splashing, furnace protection and furnace life. The existing light-burned dolomite process is to mix raw dolomite with coke and send it to a shaft kiln for calcination. After the calcined dolomite is sieved, the dolomite blocks on the sieve are sent to steelmaking, and the under-sieve <10mm The dolomite powder and flue gas dedusting powder after calcined dolomite are used sporadically, and the rest are basically used for slagging treatment. Not only waste limited resources, but also cause environmental pollution. Therefore, it is necessary to impro...
Claims
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IPC IPC(8): C04B2/10
CPCY02P40/40
Inventor 杨增福辉士昌孔凡景
Owner KUNMING IRON & STEEL GRP CO LTD