阅读说明：本技术 一种运用磁力摇床精选硅石矿的方法及装置 (Method and device for concentrating silica ore by using magnetic shaking table ) 是由 金世波 马利科 王刚 王克 董少南 于 2020-07-28 设计创作，主要内容包括：本发明公开一种运用磁力摇床精选硅石矿的方法及装置,通过设置一个锥形筛选床面,在筛选床面的下方设置磁铁,将含铁杂质滑落至距离筛选床面下方的近端；筛选床面的上方设置喷淋头,将密度小的非硅石矿物杂质漂移至筛选床面下方的远端；精矿则滑落至中端；给矿方向和筛选床面的振动方向垂直。本发明的优点是：(1)相对于传统用磁选筒去除硅石矿中含铁物质的方法,本发明的方法分选指标明显提高。(2)可一次性去除含铁的有害杂质和密度较小的非硅石矿物杂质。(The invention discloses a method and a device for selecting silica ore by using a magnetic shaking table, wherein a conical screening bed surface is arranged, a magnet is arranged below the screening bed surface, and iron-containing impurities slide to a near end away from the lower part of the screening bed surface; a spray head is arranged above the screening bed surface, and non-silica mineral impurities with low density drift to the far end below the screening bed surface; the concentrate slides to the middle end; the feeding direction is vertical to the vibration direction of the screening bed surface. The invention has the advantages that: (1) compared with the traditional method for removing iron-containing substances in the silica ore by using a magnetic separation cylinder, the method provided by the invention has the advantage that the separation index is obviously improved. (2) Can remove iron-containing harmful impurities and non-silica mineral impurities with lower density at one time.)

1. A method for concentrating silica ore by using a magnetic shaking table is characterized by comprising the following steps: through arranging a conical screening bed surface and arranging a magnet below the screening bed surface, the iron-containing impurities slide to a near end away from the lower part of the screening bed surface; a spray head is arranged above the screening bed surface, and non-silica mineral impurities with low density drift to the far end below the screening bed surface; the concentrate slides to the middle end; the feeding direction is vertical to the vibration direction of the screening bed surface.

2. The method of claim 1, wherein the magnetic shaker is used to beneficiate the silica ore by: the primary dispersion of the silica ore is carried out through a primary separation cone arranged above the screening bed surface.

3. An apparatus for implementing the method of claim 1, wherein: the screening bed comprises a screening bed surface, wherein the screening bed surface is conical, the screening bed surface is fixed on a support frame, the support frame is fixed on a support shaft, the support shaft is fixed with a vibrating rod, a feed hopper is fixed above the screening bed surface, a primary cone is arranged on the feed hopper, and the upper part of the primary cone corresponds to an outlet of a feed pipe; an annular spray head is arranged above the screening bed surface; a magnet is arranged below the feed hopper.

4. The apparatus of claim 3, wherein: the roller is arranged below the supporting frame and arranged on the slide way.

5. The apparatus of claim 3, wherein: the vibrating rod is connected with a telescopic motor.

Technical Field

The invention relates to the technical field of metallurgy, in particular to a method and a device for screening silica ore.

Background

The impurities of the silica ore are divided into harmful impurities containing iron and non-silica mineral impurities with lower density; the prior art uses a drum magnetic separator which can only remove iron-containing harmful impurities but cannot remove less dense non-silica mineral impurities, and therefore further screening is required, which not only increases the cost, but also reduces the efficiency.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a method and a device for screening two kinds of impurities at one time, and the specific technical scheme is as follows:

a method for using magnetic table concentrator to refine silica ore comprises arranging a vibrating conical screening bed surface, arranging a magnet below the screening bed surface, and sliding iron-containing impurities to a near end away from the lower part of the screening bed surface; a spray head is arranged above the screening bed surface, and non-silica mineral impurities with low density drift to the far end below the screening bed surface; the concentrate slides to the middle end;

the feeding direction is vertical to the vibration direction of the screening bed surface.

In order to ensure better screening effect, the primary cone arranged above the screening bed surface is used for preliminarily dispersing the silica ores.

The invention further discloses a device for realizing the method, which comprises a screening bed surface, wherein the screening bed surface is conical, the screening bed surface is fixed on a support frame, the support frame is fixed on a support shaft, the support shaft is fixed with a vibrating rod, a feed hopper is fixed above the screening bed surface, a primary cone is arranged on the feed hopper, and the upper part of the primary cone corresponds to an outlet of a feed pipe; an annular spray head is arranged above the screening bed surface; a magnet is arranged below the feed hopper.

The roller is arranged below the supporting frame and arranged on the slide way.

The vibrating rod is connected with a telescopic motor.

The invention has the advantages that: (1) compared with the traditional method for removing iron-containing substances in the silica ore by using a magnetic separation cylinder, the method provided by the invention has the advantage that the separation index is obviously improved. (2) Can remove iron-containing harmful impurities and non-silica mineral impurities with lower density at one time.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the annular showerhead of fig. 1, taken away.

Detailed Description

The invention is described in detail with reference to the accompanying drawings, as shown in the drawings, the invention comprises a screening bed surface 1, wherein the screening bed surface 1 is conical, the screening bed surface is fixed on a support frame 2, the support frame 2 is fixed on a support shaft 3, the support shaft is fixed with one end of a vibrating rod 4, and the other end of the vibrating rod 4 is connected with a vibrating device 15; the simplest vibration device is a telescopic motor, in addition, a through hole can be formed in the end part of the vibration rod, a pin shaft is arranged in the through hole and connected with an eccentric wheel, and the eccentric wheel is driven by the motor through a speed reducer to rotate; the vibrating rod can also be connected with the electromagnetic vibrator; the prior art as long as the function of vibration is achieved is applicable to the present invention;

a feed hopper 5 is fixed above the screening bed surface 1, a primary separation cone 6 is arranged on the feed hopper 5, and the upper part of the primary separation cone 6 corresponds to the outlet of a feed pipe 7; an annular spray header 8 is arranged above the screening bed surface; a magnet 9 is arranged below the feed hopper.

And a roller 10 is arranged below the supporting frame, and the roller 10 is arranged on a slide rail 11.

The application method of the invention comprises the following steps:

(1) feeding minerals to be sorted from a feeding port of the magnetic shaking table;

(2) separating by a magnetic shaker to form sub-belts on the bed surface;

(3) according to the requirement of the silica ore product, the minerals meeting the requirement are intercepted at the ore removal end for collection (the iron content can reach below 0.01 percent), and the rest part is treated as middlings or tailings as appropriate.

According to the invention, a vibrating conical screening bed surface 1 is arranged, a magnet 9 is arranged below the screening bed surface, and iron-containing impurities slide to a near end 12 which is far away from the lower part of the screening bed surface; a spray head 8 is arranged above the screening bed surface, and non-silica mineral impurities with low density drift to a far end 13 below the screening bed surface; the concentrate then slides down to the middle 14;

in order to ensure that the vibration does not cause the influence of the distance between the ore and the screening bed surface, the ore feeding direction is vertical to the vibration direction of the screening bed surface.

In order to ensure better screening effect, the primary cone arranged above the screening bed surface is used for preliminarily dispersing the silica ores.