Efficient circulating fluidized bed grinding equipment and application method thereof

A technology of circulating fluidized bed and equipment, which is applied in swirl devices, devices whose axial direction can be reversed, and grain processing, etc., which can solve the problems of large equipment investment, high energy consumption, and low cost, and achieve shortening Process flow, improved grinding efficiency, and low equipment cost

Active Publication Date: 2015-09-02
ZHEJIANG YUNJIE TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high energy consumption, low efficiency, large investment in equipment and the inability of existing circulating fluidized bed crushing equipment to crush large-diameter mineral materials involved in similar cement production. A high-efficiency circulating fluidized bed grinding equipment with low energy consumption, high efficiency, and low cost, which is suitable for grinding large-diameter mineral materials. The invention also provides a method for using the high-efficiency circulating fluidized bed grinding equipment

Method used

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  • Efficient circulating fluidized bed grinding equipment and application method thereof
  • Efficient circulating fluidized bed grinding equipment and application method thereof

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Embodiment 1

[0020] Example 1: Efficient circulating fluidized bed grinding equipment

[0021] see figure 1 and figure 2 , consisting of fan 41, positive pressure circulation pipe Ⅰ 42, cyclone dust collector 43, negative pressure circulation pipe 45, mill 46, rear section of negative pressure circulation pipe 47, positive pressure circulation pipe Ⅱ 51, bag filter branch, cyclone dust removal The device 43 is used to realize the separation of qualified fine powder and coarse powder. There are three interfaces on the cyclone dust collector 43. The air inlet is the inlet of fluidized material, the ash discharge port 59 is the outlet of coarse powder, and the exhaust port is the qualified fluidized fine powder. Powder outlet, the head end of the negative pressure circulation pipe is the air inlet 54, and the tail end is the air outlet. The ratio of the diameter of the cylinder body of the cyclone dust collector to the height of the cone is 2.5. The separation cylinder 57 of the vortex air...

Embodiment 2

[0022] Embodiment 2: the use method of efficient circulating fluidized bed grinding equipment

[0023] Follow these steps:

[0024] S1. Start up: start the mill, start the fan, so that the air flow flows at a high speed in the circulation channel;

[0025] S2. Feeding: Start the feeding device to add materials into the high-efficiency circulating fluidized bed grinding equipment, and adjust the feeding amount to match the production capacity of the equipment;

[0026] S3. Operation process and adjustment control:

[0027] S301. Primary crushing: after the mill crushes the large-diameter materials initially, the small-particle materials produced form a fluidized state under the action of high-speed airflow;

[0028] S302. Control the particle size of the material entering the fan: After the fluidized material enters the rear section of the negative pressure circulation pipe, because the diameter of the inlet end of the rear section of the negative pressure circulation pipe is...

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Abstract

The invention relates to efficient circulating fluidized bed grinding equipment and its application method. According to the invention, a grinding machine is connected in series to a negative-pressure circulating pipe of the circulating fluidized bed grinding equipment. A traditional grinding machine, the circulating fluidized bed grinding equipment and a cyclone dust collector are integrated as a whole. Thus, the technological process of the grinding work is shortened, and a fine powder which accords with requirements can be directly produced. As the fine powder ground by the grinding machine is timely separated from a coarse material, grinding efficiency is raised, and energy consumption of the grinding work is reduced. In comparison with a traditional powder classifier, the cyclone dust collector has a simple structure and is low in equipment cost. In addition, the problem that the circulating fluidized bed grinding equipment cannot be used for pulverizing large pieces of hard mineral materials is solved.

Description

technical field [0001] The invention relates to a high-efficiency circulating fluidized bed grinding equipment and a using method thereof, belonging to the technical field of circulating fluidized beds and grinding. Background technique [0002] Milling operation is an important production process in cement production. At least 3 tons of materials (including various raw materials, fuels, clinker, mixture, and gypsum) must be ground for each ton of Portland cement produced. According to statistics, dry process cement The power consumed by the grinding operation of the production line accounts for more than 60% of the power of the whole plant. The milling operation in cement production is generally to grind the material with a mill, and then separate the fine powder through a classifier. Similar milling operations widely exist in metallurgy, chemical industry, building materials and other industries. The existing milling Because the process cannot separate the fine powder in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C19/06B02C23/08
CPCB02C19/06B02C21/00B04C5/00
Inventor 贾平
Owner ZHEJIANG YUNJIE TECH CO LTD
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