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System for preparing straw micro powder

A technology of straw and micropowder, which is applied in the direction of separating solids from solids with airflow, solid separation, and grain treatment, etc. problems, achieve the effect of shortening the production cycle, increasing the output per machine hour, and reducing over-grinding

Active Publication Date: 2015-08-12
SOUTHWEAT UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

At present, the sieving method is mainly used to obtain straw powder with a certain particle size range, but in the actual production process, problems such as material run-off, sieve blockage and low sieving rate are prone to occur, which cannot meet the needs of continuous large-scale industrial production

Method used

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  • System for preparing straw micro powder
  • System for preparing straw micro powder
  • System for preparing straw micro powder

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing, the present invention will be further described:

[0050] like figure 1Shown is a schematic diagram of the system principle of the present invention: In this embodiment, the crop straw we use as the pre-crushed raw material is a 15-20 mm long section, and it is dried at the same time so that the moisture content is preferably less than 10% , after pre-crushing, the raw material of straw powder with a D90 of about 800um fineness is obtained. There may be a small amount of small gravel mixed in the straw, which will be discharged to the bottom of the straw pre-shredder during the pre-crushing process, and discharged through the slag discharge port at the bottom.

[0051] The straw particles crushed by the straw pre-crusher are pneumatically transported to the cyclone separator under the suction of the fan for collection, and a very small amount of particles (particle size ≤ 25um) pass through the exhaust port at the top of ...

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Abstract

The invention discloses a system for preparing straw micro powder, and relates to a micro powder grinding facility. A turbo air classifying technology is used to optimize the system, and the system is composed of a pre-grinding subsystem and a grinding and classifying subsystem. The system comprises a straw pre-grinding machine, a cyclone separator, a pulse-jet bag dust collector, a blower fan, an air-lock feeder, a finished product chamber, a semi-finished product collecting chamber, a straw grinding machine, an elevating machine, and a turbo air classifier. The system can grind, classify and collect crop straws, is capable of effectively controlling the particle size of the straw micro powder, and thus guarantees the quality of finished products. The finished product fineness (D98) is adjustable in a range of 80 to 200 um. The system is a closed circulation system, can work continuously, saves the time, and shortens the production period. At the same time, the whole production process is carried out under a negative pressure, so no ash is generated, and the system is clean and environment-friendly.

Description

technical field [0001] The invention relates to a micropowder crushing treatment equipment, in particular to a system for preparing and treating straw with micropowder. Background technique [0002] Straw building materials are made of straw powder and are widely used in furniture and construction industries. For example, the processed straw powder can be used as raw materials for the production of straw fire-proof panels, straw environmental protection doors, straw floors and other building materials. It not only avoids environmental pollution, but also increases the added value of straw, which is of great significance to the realization of clean rural household environment and efficient use of resources. [0003] Straw building material products have certain requirements on the particle size of straw powder, especially the surface of building material products has higher requirements on particle size. At present, the sieving method is mainly used to obtain straw powder w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B07B9/02B07B7/083B07B11/02
CPCB02C21/00B02C23/18B02C2201/06B07B7/083B07B9/02B07B11/02
Inventor 李翔张胜林项林芳祝良明
Owner SOUTHWEAT UNIV OF SCI & TECH
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