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Internal circulation controlled flat type static-state powder concentrator, internal circulation controlled powder selecting system and powder selecting technological process of internal circulation controlled powder selecting system

A technology of powder classifier and internal circulation, which is applied in the direction of separating solids from solids by air flow, solid separation, grain treatment, etc. It can solve the problems of low overall efficiency of sorting and grinding, high construction cost, etc., and achieve extended material Dwell time, cost reduction effect

Pending Publication Date: 2019-03-22
TIANJIN CEMENT IND DESIGN & RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a method to solve the problems of high construction cost caused by static powder classifier and related transportation equipment and civil engineering, and low comprehensive efficiency of sorting and grinding caused by no internal circulation in the system. The flat static powder classifier, system and process flow with controllable internal circulation

Method used

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  • Internal circulation controlled flat type static-state powder concentrator, internal circulation controlled powder selecting system and powder selecting technological process of internal circulation controlled powder selecting system
  • Internal circulation controlled flat type static-state powder concentrator, internal circulation controlled powder selecting system and powder selecting technological process of internal circulation controlled powder selecting system
  • Internal circulation controlled flat type static-state powder concentrator, internal circulation controlled powder selecting system and powder selecting technological process of internal circulation controlled powder selecting system

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Embodiment 2

[0064] Such as Figure 7b , the difference between this embodiment and Embodiment 1 is the structure of the lifting device 48, the structure of the lifting device 48 is an impeller type, and the lifting device 48 includes a lifting shaft 482, a lifting impeller 483 and a lifting The blade 484 and the lifting shaft 482 are installed inside the casing 49 and the position corresponds to the internal circulation interface 47 . The lifting impeller 483 is fitted on the lifting shaft 482 . Several blades 484 are evenly distributed on the lifting impeller 483 . Driven by external force, the lifting device shaft 48 drives the lifting blade 484 to rotate towards the direction of the coarse powder entering the inner circulation interface 47 to disperse the coarse powder. The impeller is designed for frequency conversion and speed regulation, so the coarse powder can be scattered in different flow field areas according to the working conditions to form a controllable internal circulati...

Embodiment 3

[0066] Such as Figure 7c , The difference between this embodiment and Embodiment 1 is the structure of the material raising device 48, and the structure of the material raising device 48 is a material spreading box type. An extension plate 485 is designed on the upper and lower sides of the inner circulation interface 47, and a wear-resistant lining 486 is coated on the lower extension plate. The coarse powder returned by the fine powder separator 5 enters the flow field area of ​​the powder separator along the wear-resistant lining 25, and a single or multiple nozzles 487 are arranged below the lower extension plate. The nozzle 487 sprays air through compressed air or a blower device and sprays and cleans the fine powder contained in the coarse powder entering the internal flow field area, so as to achieve the purpose of controlling the internal circulation.

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Abstract

The invention belongs to the technical field of mineral processing and relates to an internal circulation controlled flat type static-state powder concentrator, an internal circulation controlled powder selecting system and a powder selecting technological process of the internal circulation controlled powder selecting system suitable for caky or powdery material smashed by material bed smashing equipment. The internal circulation controlled flat type static-state powder concentrator comprises a feeding hole, a coarse powder outlet, a fine powder outlet, a precrushing dispersing device, a housing, scattering plates, guide plates, a counterattack plate, a fluidized bed, a blower device, an internal circulation connector and a material raising device, wherein the precrushing dispersing device is connected above the feeding hole; the housing comprises a housing air inlet side, a housing air outlet side and a housing discharging side; a row of scattering plates is arranged in the housing air inlet side; a row of guide plates is arranged in the housing air outlet side; the counterattack plate is arranged in the housing discharging side; the fluidized bed is arranged below the counterattack plate and communicates with the blower device; the material raising device is arranged in the housing air outlet side; and the internal circulation connector corresponding to the material raisingdevice is arranged on the housing. The powder concentrator and related transportation equipment are low in civil engineering construction cost, and the sorting and grinding combined efficiency of a controllable internal circulation system is high.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a flat static powder separator, a system and a technological process suitable for controlling the internal circulation of cake-shaped or powdery materials crushed by material bed crushing equipment. Background technique [0002] In the mineral crushing and sorting process, material bed crushing equipment (roller press, vertical roller mill, horizontal roller mill) is more efficient than traditional tube mills and has become the mainstream. The supporting dispersing and pre-sorting equipment is called static powder separator. The characteristics of the currently known static powder separator and its process flow are: in order to ensure better dispersion and pre-separation effect, the static powder separator is designed with a large height / width ratio to extend the path of dispersion and pre-separation; Sorting and follow-up fine powder classifier operate in...

Claims

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Application Information

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IPC IPC(8): B07B7/01B07B9/02B07B11/02B02C4/08B02C21/00
CPCB02C4/08B02C21/00B07B7/01B07B9/02B07B11/02
Inventor 李洪陈艺芳王娜李洪生何毛吴卫国孙文东何辰辉
Owner TIANJIN CEMENT IND DESIGN & RES INST
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