CN206996817U

CN206996817U - Grinding attachment

Info

Publication number: CN206996817U
Application number: CN201720861800.1U
Authority: CN
Inventors: 羡喜盼
Original assignee: Shougang Jingtang United Iron and Steel Co Ltd
Current assignee: Shougang Jingtang United Iron and Steel Co Ltd
Priority date: 2017-07-17
Filing date: 2017-07-17
Publication date: 2018-02-13
Anticipated expiration: 2027-07-17

Abstract

The utility model discloses a kind of grinding attachment, it includes ball mill (1), the entrance of the ball mill is provided with rock feeder (2), the exit of the ball mill is provided with slime dam (3), the top of the ball mill is provided with cyclone (4), desilting mouth (5) is fixed with the outlet of the cyclone, the exit of the cyclone is provided with riffler (6), the inlet communication of the riffler and ball mill, the import of the cyclone is connected by pipeline with the slime dam, Pulp pump (7) and Pneumatic gate valve (8) are installed on the pipeline, the top of the cyclone is provided with overflow pipe (9), the exit of the overflow pipe is provided with overflow launder (10), pipe (11) is communicated with the overflow launder.The grinding attachment for reaching 200 mesh its purpose is to provide a kind of one section of closed circuit grinding can and accounting for more than 80%.

Description

Grinding attachment

Technical field

Mineral processing machinery field is the utility model is related to, more particularly to a kind of grinding attachment.

Background technology

For existing grinding attachment, two sections of mesh of closed circuit grinding granularity -200 at the beginning of due to designing account for more than 90%, after making Continuous ceramic filter can not be born.

Utility model content

The technical problems to be solved in the utility model, which is to provide a kind of one section of closed circuit grinding can and reaches -200 mesh, to be accounted for More than 80% grinding attachment.

The utility model grinding attachment, including ball mill, the entrance of the ball mill are provided with rock feeder, the ball mill Exit be provided with slime dam, the top of the ball mill is provided with cyclone, desilting mouth is fixed with the outlet of the cyclone, The exit of the cyclone is provided with riffler, the inlet communication of the riffler and ball mill, and the import of the cyclone is led to Piping is connected with the slime dam, and Pulp pump and Pneumatic gate valve are provided with the pipeline, and the top of the cyclone is provided with Overflow pipe, the exit of the overflow pipe are provided with overflow launder, pipe are communicated with the overflow launder.

The utility model grinding attachment, wherein overflow length of tube in the cyclone is the ㎜ of 500 ㎜~515.

The utility model grinding attachment, wherein a diameter of 140 ㎜ of overflow pipe in the cyclone~145 ㎜.

The utility model grinding attachment, wherein a diameter of 90 ㎜ or 95 ㎜ of the desilting mouth.

The utility model grinding attachment, wherein the pressure of the cyclone is 65kPa~70kPa.

The utility model grinding attachment, wherein a diameter of 500 ㎜ of the cyclone.

The utility model grinding attachment, wherein the pressure of the Pulp pump is 70kPa~80kPa.

The utility model grinding attachment uses one section of closed circuit grinding flow, and the parameter of cyclone is rectified and improved, changed simultaneously Become the dress ball mode of ball milling, realize that one section of mesh of closed circuit grinding -200 accounts for more than 80% requirement, while reduce energy consumption and equipment disappears While consumption, enable flow quality stability.

The utility model is described in further detail below in conjunction with the accompanying drawings.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model grinding attachment；

Fig. 2 is the structural representation of cyclone in the utility model grinding attachment.

Embodiment

As shown in figure 1, the utility model grinding attachment, including ball mill 1, the entrance of the ball mill 1 are provided with to ore deposit Machine 2, the exit of the ball mill 1 are provided with slime dam 3, and the top of the ball mill 1 is provided with cyclone 4, the cyclone 4 Desilting mouth 5 is fixed with outlet, the exit of the cyclone 4 is provided with riffler 6, the import of the riffler 6 and ball mill 1 Connection, the import of the cyclone 4 connected by pipeline with the slime dam 3, and Pulp pump 7 and pneumatically is provided with the pipeline Gate valve 8, the top of the cyclone 4 are provided with overflow pipe 9, and the exit of the overflow pipe 9 is provided with overflow launder 10, the overflow launder Pipe 11 is communicated with 10.Extend to flotation device either magnetic separator or dashpot the communicating pipe 11.

As shown in Fig. 2 the utility model grinding attachment, wherein the length L1 of overflow pipe 9 in the cyclone 4 is 500 ㎜ ~515 ㎜, the diameter D1 of the overflow pipe 9 in the cyclone 4 are the ㎜ of 140 ㎜~145, and the diameter D2 of the desilting mouth 5 is 90 ㎜ or 95 ㎜.

The utility model grinding attachment, wherein the pressure of the cyclone 4 is 65kPa~70kPa.

The utility model grinding attachment, wherein a diameter of 500 ㎜ of the cyclone 4, the ball mill 1 be 3.6m × 7.2m overflowball mills, the whole circulatory system only add classification water, and raw ore keeps 100t/h.

The utility model grinding attachment, wherein the pressure of the Pulp pump 7 is 70kPa~80kPa.

The utility model embodiment provides the change of both direction, one be cyclone element redesign, including： Reduce overfall tube diameter (originally a diameter of 160 ㎜ of overflow pipe), reduce the outspoken footpath of desilting (originally a diameter of the 110 of desilting mouth ㎜), the overflow length of tube extended in cyclone (originally the length of overflow pipe is 485 ㎜).Another is to change ore grinding Parameter, sand return water is no longer provided, only adds water in the slime dam of ball milling outlet, for providing the graded concentration of cyclone, mill Ore deposit concentration improves, the prolongation ore grinding time.

After the utility model embodiment reforming equipment, cyclone pressure 65kPa~70kPa need to be controlled.Cyclone underflow is straight Connect and be blended into ball mill mineral-feeding.Control ball mill filling rate 42 ± 0.5%, control slurry pump frequency conversion realize transfer pressure 70kPa~ 80kPa, the granularity of final products account for more than 80% for -200 mesh.Water management is added at 145~155 cubes ms/h, makes ore grinding Concentration is 81 ± 1%.

Enter after being mixed to ore deposit with cyclone underflow in ball mill, ball mill overflow product is with adding after water mixes by Pulp pump Cyclone is delivered to, granularity qualified products are overflow product.Raw ore is fed into ball mill, product adds in slime dam and adds water Cyclone classification is delivered to by Pulp pump, overflow product is qualified products, and underflow product continues with into ball mill.

The grinding attachment operation principle that the utility model embodiment provides is as follows：Cyclone uses 3 groups, control pressure 65kPa~70kPa.In the case where L1 extends and diameter D1 reduces, granularity certified products recovery scope narrows, and further reduces outer Portion's turbulent flow influences to caused by classification.Meanwhile ball mill ore milling concentration increases, ore grinding time lengthening is obvious, and ball mill load increases Add.Under ore grinding and classification double action, one section of closed circuit grinding can be achieved and realize that the mesh of granularity -200 accounts for more than 80% target.

The utility model embodiment has the advantages that：

1st, when granularity requirements are not high, the equipment can obviously reduce power consumption and abrasive body consumption.

2nd, cost is relatively low, is easy to industrially largely implement.

Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this The various modifications and improvement that the technical scheme of utility model is made, the protection of the utility model claims book determination all should be fallen into In the range of.

Claims

A kind of 1. grinding attachment, it is characterised in that：Including ball mill (1), the entrance of the ball mill is provided with rock feeder (2), The exit of the ball mill is provided with slime dam (3), and the top of the ball mill is provided with cyclone (4), and the cyclone goes out Desilting mouth (5) is fixed with mouthful, the exit of the cyclone is provided with riffler (6), the import of the riffler and ball mill Connection, the import of the cyclone connected by pipeline with the slime dam, and Pulp pump (7) and pneumatically is provided with the pipeline Gate valve (8), the top of the cyclone are provided with overflow pipe (9), and the exit of the overflow pipe is provided with overflow launder (10), described to overflow Pipe (11) is communicated with chute.
2. grinding attachment according to claim 1, it is characterised in that：Overflow pipe (9) length in the cyclone (4) is The ㎜ of 500 ㎜~515.
3. grinding attachment according to claim 2, it is characterised in that：The diameter of overflow pipe (9) in the cyclone (4) For the ㎜ of 140 ㎜~145.
4. grinding attachment according to claim 3, it is characterised in that：A diameter of 90 ㎜ or 95 of the desilting mouth (5) ㎜。
5. grinding attachment according to claim 4, it is characterised in that：The pressure of the cyclone (4) be 65kPa~ 70kPa。
6. grinding attachment according to claim 5, it is characterised in that：A diameter of 500 ㎜ of the cyclone (4).
7. grinding attachment according to claim 6, it is characterised in that：The pressure of the Pulp pump (7) be 70kPa~ 80kPa。