Front dry ore slurry making device for mine wet screen

Abstract

The utility model discloses a preposed dry ore slurry making device for a mine wet screen, which comprises a slurry making box arranged between a prescreen and a head pulley of a feeding belt conveyor and used for mixing dry ore and water; the double-side water inlets are symmetrically formed in the two sides of the middle mixing box of the slurry making box and used for injecting water into the middle mixing box; the side ore pulp outlet and the front ore pulp outlet are respectively formed in the side wall and the front wall of the middle mixing box and are used for uniformly guiding out the mixed ore pulp; the flow guide assembly comprises a side flow guide plate and a front flow guide plate which are correspondingly and obliquely mounted below the side ore pulp outlet and the front ore pulp outlet respectively and used for dispersing the flow direction of the ore pulp; and a wear-resistant ceramic sheet is pasted on the inner wall of the middle mixing box. Through design optimization of the slurry making box, uniform and stable screened ore pulp is achieved, the screening efficiency of the pre-screening is improved, and the handling capacity of the pre-screening and the ball mill is stabilized. After transformation, the pre-screening capacity of the third series can be averagely improved by 5.6 t / h compared with that of the second series.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine mineral sorting, dry ore pulp making technical field, concretely relates to a kind of front dry ore pulp making device for mine wet screening. BACKGROUND

[0002] The original iron separation process used by our company is that the raw ore is treated by high-pressure roller grinding and then directly enters the ball mill for grinding, and then is pumped to the cyclone for classification. Now, due to process upgrading, the raw ore treated by high-pressure roller grinding enters the pre-screen, and after pre-classification, it enters the ball mill. After the pre-screen is installed, due to the influence of the height of the original workshop, the lifting of the head wheel of the feeding belt is limited. After the pulp box is made according to the original design, the pulp making effect is not ideal, the distribution is uneven, the screening efficiency is low, the pre-screening capacity does not meet the expectation, and indirectly leads to the ball mill processing capacity not reaching the designed capacity. SUMMARY

[0003] The utility model aims at providing a kind of front dry ore pulp making device for mine wet screening, to solve the technical problems in the background art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A kind of front dry ore pulp making device for mine wet screening, comprising:

[0006] Pulp box, set between pre-screen and the head wheel of feeding belt, for mixing dry ore and water;

[0007] Double-sided water inlet, symmetrically set on both sides of the intermediate mixing tank of the pulp box, for injecting water into the intermediate mixing tank;

[0008] Side pulp outlet and front pulp outlet, respectively set on the side wall and front wall of the intermediate mixing tank, for uniformly discharging mixed pulp;

[0009] Flow guide assembly, comprising:

[0010] Side flow guide plate and front flow guide plate, respectively correspondingly inclinedly installed below the side pulp outlet and the front pulp outlet, for dispersing pulp flow direction;

[0011] Pasted wear-resistant ceramic sheet, the inner wall of the intermediate mixing tank is pasted with wear-resistant ceramic sheet.

[0012] In some embodiments, the intermediate mixing tank is made of welded steel plate, and the side wall and the front wall are respectively provided with adjustable angle side baffle and front baffle for controlling pulp flow rate and distribution uniformity.

[0013] In some embodiments, the opening height of the side pulp outlet and the front pulp outlet is above 500mm from the bottom of the intermediate mixing tank.

[0014] In some embodiments, the angle of inclination of the side flow guide plate and the front flow guide plate in the flow guide assembly is 30-60° to balance the dispersion effect of the ore pulp and the impact on the feed end of the screen machine.

[0015] In some embodiments, a drop height difference is provided between the top of the intermediate mixing box and the head wheel of the feed belt to make the dry ore disperse into uniform particles by gravitational potential energy, avoiding clumping.

[0016] In some embodiments, the double-sided water inlet is connected to an external water source through a high-pressure water pipe, and the water inlet is located higher than the ore pulp outlet to ensure that the water flow fully contacts the dry ore.

[0017] In some embodiments, the device further comprises:

[0018] A vibration motor is installed outside the intermediate mixing box to assist in mixing the ore pulp.

[0019] A liquid level sensor is used to monitor the liquid level of the ore pulp in the intermediate mixing box in real time, and the water inflow is adjusted by the controller.

[0020] In some embodiments, the wear-resistant ceramic sheet has a thickness of 10-20mm and covers the impact-worn area of the inner wall of the intermediate mixing box.

[0021] The present utility model has the following beneficial effects:

[0022] Through the design optimization of the pulp box, uniform and stable screening ore pulp is achieved, the pre-screening efficiency is improved, and the processing capacity of the pre-screening and ball mill is stabilized. After the transformation, the processing capacity of the three series of pre-screening can be increased by an average of 5.6t / h compared with the two series. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 The present utility model has the following beneficial effects:

[0024] Fig. 2 The present utility model has the following beneficial effects:

[0025] REFERENCE NUMERALS:

[0026] 10 - head wheel of the feed belt, 20 - pulp box, 30 - pre-screening, 1 - intermediate mixing box, 2 - double-sided water inlet, 3 - rear baffle, 4 - side baffle, 5 - side ore pulp outlet, 6 - front ore pulp outlet, 7 - side flow guide plate, 8 - front flow guide plate, 9 - front baffle. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be combined with the drawings of the preferred embodiments of the present application to describe the technical solutions in the embodiments of the present application in more detail. In the drawings, the same or similar notations represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0028] The embodiments of the present application will be described in detail below with reference to the drawings.

[0029] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or display including a series of steps or units need not be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0032] The following will be combined Figs. 1-2 A pre-dry mine pulp device for mine wet screening is described in detail in the embodiments of the present application. It should be noted that the following embodiments are only used to explain the present application and do not constitute a limitation of the present application.

[0033] Embodiment 1:

[0034] As Figs. 1-2As shown, the utility model discloses a kind of front dry ore pulp making device for mine wet screening, comprising: intermediate mixing tank 1, double-sided water inlet 2, flow guide component, be set between pre-screen 30 and feed belt machine head wheel 10, for the mixing of dry ore and water;Symmetrically set in the two sides of the intermediate mixing tank 1, for water injection into intermediate mixing tank 1;Side ore pulp outlet 5 and front ore pulp outlet 6 are respectively set in the side wall and front wall of intermediate mixing tank 1, for the uniform export of mixed ore pulp.

[0035] Flow guide component, including: side flow guide plate 7 and front flow guide plate 8, respectively correspondingly be installed in the below of side ore pulp outlet 5 and front ore pulp outlet 6, for dispersing ore pulp flow direction;The inner wall of the intermediate mixing tank 1 is pasted with wear-resistant ceramic sheet.

[0036] In some embodiments, the intermediate mixing tank 1 is made of welded steel plate, and the side wall and the front wall are respectively provided with adjustable angle side baffle 4 and front baffle 9 for controlling the flow rate and distribution uniformity of the ore pulp.

[0037] In some embodiments, the opening height of the side ore pulp outlet 5 and the front ore pulp outlet 6 is above 500 mm at the bottom of the intermediate mixing tank 1. Reserving a height of 500 mm at the bottom of the intermediate mixing tank 1 can play a sufficient buffering role. Increase the service life of the intermediate mixing tank 1.

[0038] In the flow guide component, the inclination angle of the side flow guide plate 7 and the front flow guide plate 8 is 30°-60°, to balance the dispersion effect of the ore pulp and the impact on the feed end of the screening machine.

[0039] In some embodiments, a drop height difference is provided between the top of the intermediate mixing tank 1 and the feed belt machine head wheel 10, so that the dry ore is scattered into uniform particles by gravitational potential energy, avoiding clumping. The double-sided water inlet 2 is connected to an external water source through a high-pressure water pipe, and the water inlet position is higher than the ore pulp outlet height, to ensure that the water flow and the dry ore are in full contact.

[0040] The core component of the device is the pulp making tank 20, which is made of steel plates. A height of 500 mm is reserved at the bottom of the intermediate mixing tank 1, and wear-resistant ceramic sheets are pasted on the inside of each component to enhance the wear resistance of the pulp making tank 20 and prolong the service life. In some embodiments, the thickness of the wear-resistant ceramic sheet is 10-20 mm, covering the impact and wear area of the inner wall of the intermediate mixing tank 1.

[0041] The pulp making tank 20 is installed between the feed belt machine head wheel 10 and the pre-screen 30, and the height between the dry ore feeding belt head wheel and the pre-screen 30 is adjusted according to the properties of the ore or its clumping property, to ensure that the dry ore has sufficient drop potential energy before entering the screen and to ensure that the dry ore is fully scattered without clumping.

[0042] Two double-side water inlets 2 are arranged on the intermediate mixing box 1 to inject water from both sides to the bottom of the box. A side ore pulp outlet 5 and a front ore pulp outlet 6 are arranged at a height of 500 mm from the bottom of the box. Meanwhile, a side guide plate 7, a front guide plate 8, a rear baffle 3, a side baffle 4 and a front baffle 9 are installed.

[0043] The starting device is started, and the dry ore falls from the head wheel 10 of the feeding belt conveyor by gravity. At the same time, water is injected into the intermediate mixing box 1 through the double-side water inlets 2. The dry ore and the water are mixed in the intermediate mixing box 1 by the gravity potential energy of the dry ore to achieve a mixing effect. The mixed ore pulp is uniformly overflowed from the side ore pulp outlet 5 and the front ore pulp outlet 6.

[0044] The overflowed ore pulp is dispersed and guided by the side guide plate 7 and the front guide plate 8. Under the blocking and guiding of the side baffle 4 and the front baffle 9, the ore pulp is uniformly flowed to the feeding end of the screen machine. During the operation, the inclination angles of the side guide plate 7 and the front guide plate 8 are adjusted according to the properties and fluidity of the ore to ensure that the ore pulp is not blocked and uniformly flowed to reduce the impact on the feeding end of the screen machine.

[0045] The screening efficiency of the pre-screen 30 and the processing capacity of the pre-screen 30 and the ball mill are continuously monitored. After a period of operation, compared with the data before the transformation, it is found that the processing capacity of the three series of pre-screens 30 is increased by 5.6 t / h than that of the two series, which achieves the expected effect of improving the screening efficiency and stabilizing the processing capacity of the pre-screen 30 and the ball mill, and verifies the effectiveness and practicability of the dry ore pulp making device.

[0046] In some embodiments, a vibration motor is installed outside the mixing box, the frequency is set to 20 Hz, and the ore pulp mixing is assisted; a liquid level sensor is installed on the top of the box body and connected to a PLC controller, and the water inflow is dynamically adjusted according to the liquid level.

[0047] The above only describes the preferred embodiments of the present application, and is used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pre-dry ore slurrying device for use in mine wet screening, characterised in that, The invention relates to a dry ore pulp making device, comprising: a pulp making box (20) arranged between a pre-sieve (30) and a head pulley (10) of a feed belt, for mixing dry ore and water; two symmetrical water inlets (2) arranged on both sides of a middle mixing box (1) of the pulp making box (20), for injecting water into the middle mixing box (1); a side ore pulp outlet (5) and a front ore pulp outlet (6) arranged on a side wall and a front wall of the middle mixing box (1) respectively, for uniformly discharging the mixed ore pulp; a flow guide assembly, comprising: a side flow guide plate (7) and a front flow guide plate (8) respectively correspondingly arranged below the side ore pulp outlet (5) and the front ore pulp outlet (6), for dispersing the flow direction of the ore pulp; a wear-resistant ceramic sheet attached to the inner wall of the middle mixing box (1).

2. The dry ore pulp making device according to claim 1, wherein: the middle mixing box (1) is made of a welded steel plate, and a side baffle (4) and a front baffle (9) with adjustable angles are arranged on the side wall and the front wall respectively, for controlling the flow rate and uniformity of the ore pulp.

3. The dry ore pulp making device according to claim 1, wherein: the opening height of the side ore pulp outlet (5) and the front ore pulp outlet (6) is above 500 mm from the bottom of the middle mixing box (1).

4. The dry ore pulp making device according to claim 1, wherein: in the flow guide assembly, the inclination angle of the side flow guide plate (7) and the front flow guide plate (8) is 30°-60°, to balance the dispersion effect of the ore pulp and the impact on the feed end of the sizer.

5. The dry ore pulp making device according to claim 1, wherein: a drop height difference is arranged between the top of the middle mixing box (1) and the head pulley (10) of the feed belt, so that the dry ore is scattered into uniform particles by gravitational potential energy, avoiding clumping.

6. The dry ore pulp making device according to claim 1, wherein: the two symmetrical water inlets (2) are connected to an external water source through high-pressure water pipes, and the water inlet position is higher than the ore pulp outlet height, to ensure that the water flow and the dry ore are in full contact.

7. The dry ore pulp making device according to claim 1, further comprising: a vibration motor arranged outside the middle mixing box (1), for assisting the mixing of the ore pulp; a liquid level sensor for real-time monitoring of the liquid level of the ore pulp in the middle mixing box (1), and adjusting the water inflow through a controller.

8. The dry ore pulp making device according to claim 1, wherein: the thickness of the wear-resistant ceramic sheet is 10-20 mm, covering the impact and wear area of the inner wall of the middle mixing box (1). ​

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