Three, two sections, one closed circuit, broken plant equipment configuration
1. Arranged in the same factory. As shown below, the same plant in two groups near the crusher end disposed in the plant, sieve unit in the plant closed other end, which is to use the slope on the highest point of elevation ore bin edges adapted ore ore bin is provided for mine. The longitudinal slope is trimmed, and the discharge of the two-stage crushing unit is transported by the collecting belt conveyor 5 to the closed-screen sieve unit, and the material on the screen is returned by the belt conveyor 6 to the second-stage crushing unit, and the material under the screen falls directly into the screen. Grinding bin. Properly compressing the respective heights of the second-stage crushing unit and the closed-circuit screen unit facilitates shortening the length of the plant. If the distance between the second-stage crushing unit and the closed-circuit sieve is long, the closed-circuit screening unit can be placed in an independent workshop, and the sieve is still above the grinding bin. The sieve is directly above the grinding bin and appropriate measures should be taken to prevent material larger than the mesh size from falling into the grinding bin.
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2. The closed-circuit screening plant and the crushing plant are separated into independent workshops. The difference from the full configuration in the same plant is that the closed screen sieve is pulled out from the crushing plant and is an independent workshop. The round-trip belt conveyor is placed in the corridor, as shown in the figure below.
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Crushing and screening equipment to configure a universal problem for small beneficiation plant must pay attention to:
(1) The flexibility of process changes and equipment replacement should be fully considered from the production reality of the small selection plant, and the appropriate plant area should be reserved.
(2) It should be simplified on the premise of ensuring operation and maintenance, but the width of the underground belt conveyor corridor must meet the needs of the operator for cleaning. The trench must have the necessary slope and flushing and sewage conditions.
(3) Although the crusher is small, an appropriate operating platform should also be provided.
(4) Discharge or transfer to the belt conveyor to prevent splashing and falling of mine; whether the ground or underground belt conveyor passes through the lintel (platform lintel or foundation lintel), the lower edge shall not be scraped.
(5) before the finely divided active iron and other metals in addition to the device must be installed.
(6) An effective dust removal device and system must be installed.
(7) Appropriate tonnage cranes should be installed and appropriate maintenance sites should be available.
Equipment configuration of four- and three-segment open-circuit crushing plants Although the newly-built concentrating plants rarely use three-stage open-circuit crushing, their proportion in production is very small, but their configuration has many things in common with closed-circuit crushing. The coarse crushing is in an independent workshop, and the medium and fine crushing are arranged in the same factory; the coarsely crushed, mediumly crushed and finely divided are respectively adjacent to each other or adjacent to each other, and are arranged stepwise along the slope line.
1. Separation of coarse and medium-sized crushing plants (1) Medium and coarse crushing arrangements are arranged on the same platform. The medium and fine crushing equipment with distribution bins is arranged on the same platform, as shown in the figure below. There are 2 sets of Ф2100 standard cone crusher and 4 sets of ф2100 short-head cone crusher. Pre-screening is provided before and after crushing. The number of sieves and crushers is 1 to 1. There are distribution bins above the pre-screening, and the ore discharge is uniformly fed to the sieve through the belt-type mining machine, and the medium-crushing ore and its pre-screening and screening materials are transported by the collecting belt conveyor to the finely divided distribution bin. With the mobile unloading trolley fabric, the mining machine of the medium crushing machine is fed to the medium crushing distribution bin by the outer belt conveyor 1 of the factory. The finely divided ore and its undersize material are sent to the grinding bin by the collecting belt conveyor 11.
(2) The medium-crush cone crusher and the fine-crush cone crusher are arranged in a single row in the same building. The number of medium and fine crushing equipment is 1 to 2, and the coarse crushing ore is transported by the belt conveyor to the highest point of the medium and fine crushing plant. The crushed iron is pre-screened by gravity, and the ore is crushed by medium crushing, fine crushing, pre-screening and fine crushing machine. The crushed pre-screening sieve directly falls into the finely divided pre-screening, and the sieved material and the finely divided ore are transported to the grinding bin by the collecting belt conveyor. The utility model has the advantages of small occupied area, self-flow conveying of materials, and convenient automatic operation, but the civil structure is complex, the plant height is large, the production flexibility is small, and the production environment is noisy. If the load factor of the medium crusher is low, the pre-screening may not be provided, and the coarse crushing ore discharge may be directly fed into the medium crushing through the belt conveyor. [next]
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