Processing technology for producing and preparing mine greening soil dressing spray-seeding material by combining gravel

Abstract

The invention relates to the technical field of foreign soil spray-seeding materials, in particular to a processing technology for producing and preparing a mine greening foreign soil spray-seeding material by combining gravel, which comprises the following steps of: transporting gravel rough materials of a gravel aggregate mine to a buffer bin of a coarse crushing workshop, feeding the gravel rough materials to a roller screen for screening through a heavy plate feeder, crushing oversize materials, and crushing the oversize materials to obtain crushed materials; screening the undersize material of the roll shaft screen through a vibrating screen in a screening workshop, wherein the undersize material of the vibrating screen becomes mud powder; materials on the vibrating screen and materials crushed by the coarse crushing machine are conveyed to a gravel processing flow; carrying out concentration and filter pressing on the waste water after gravel processing to obtain a mud cake; conveying the mud powder to a stirring tank, and conveying the mud cake to the stirring tank; grass seeds, water, a fertilizer and an additive are added into a stirring tank and then stirred, the stirred soil dressing spray-seeding material is conveyed to a spray-seeding machine through a slurry pump, and the spray-seeding machine performs spray-seeding operation. The process can realize comprehensive utilization of by-products such as mud powder and mud cakes of a sandstone system and improve the quality of spray-seeding materials.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of guest soil spray seeding material, in particular to a processing technology for preparing mine greening guest soil spray seeding material in combination with sandstone production. BACKGROUND

[0002] Sandstone aggregate mines are often open-pit mined, and the mining area, sandstone processing area and other areas requiring re-greening have a large area that needs a large amount of guest soil spray seeding material. After the topsoil is stripped in the sandstone mine, the topsoil stored is often difficult to utilize in re-greening spray seeding due to unreasonable planning of the slag field. In the process of sandstone processing, by-products such as mud powder and mud cake are often difficult to effectively utilize, thereby increasing the operating cost of the enterprise.

[0003] In addition, the traditional guest soil spray seeding material is usually prepared on a spray seeding machine. Due to the difference in equipment configuration of each spray seeding machine, the quality of the spray seeding material prepared by different spray seeding machines is inconsistent, the stability of the quality of the spray seeding material cannot be controlled, and finally the greening effect of different areas in the same project is different. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the deficiencies and defects mentioned in the above background technology, and to provide a processing technology for preparing mine greening guest soil spray seeding material in combination with sandstone production, which realizes comprehensive utilization of by-products such as mud powder and mud cake in the sandstone system and improves the quality of the spray seeding material. To solve the above technical problems, the technical solution provided by the present application is: A processing technology for preparing mine greening guest soil spray seeding material in combination with sandstone production, comprising: transporting sandstone raw materials of a sandstone aggregate mine to a coarse crushing workshop buffer bin, feeding to a roller screen for screening through a heavy plate feeder, screening the materials on the roller screen into a coarse crushing crusher for crushing, and screening the materials under the roller screen into a screening workshop through a first conveyor; After the materials under the roller screen are screened in the screening workshop through a vibrating screen, the materials under the vibrating screen become mud powder and are stored in a mud powder temporary storage bin; The materials above the vibrating screen and the materials crushed by the coarse crushing crusher are conveyed to a sandstone processing flow through a second conveyor; the wastewater after sandstone processing is concentrated and then enters a filter press for pressure filtration, and the mud cake after pressure filtration is stored in a mud cake storage yard; The mud powder is transported to a stirring tank through a third conveyor, and the mud cake is conveyed to the stirring tank through a fourth conveyor; After the grass seeds, water, fertilizer and admixture are added to the stirring tank, stirring is performed, and the guest soil spray seeding material after stirring is conveyed to a spray seeding machine through a mud pump, and the spray seeding machine performs spray seeding operation.

[0005] In an embodiment, the mud powder temporary storage bin is provided with a first feeder, the mud powder is fed to the third conveyor through the first feeder, the mud cake storage yard is provided with a second feeder, and the mud cake is fed to the fourth conveyor through the second feeder.

[0006] In an embodiment, the first conveyor, the second conveyor, the third conveyor and the fourth conveyor are belt conveyors.

[0007] In an embodiment, the first feeder and the second feeder are vibration feeders.

[0008] In an embodiment, the distance between the rollers of the roller screen is adjustable, and the distance between the rollers is 100-150 mm.

[0009] In an embodiment, the vibration screen is a linear vibration screen or a circular vibration screen.

[0010] In an embodiment, the linear vibration screen or the circular vibration screen is a single-layer screen, and the size of the screen hole of the single-layer screen is not greater than 25 mm.

[0011] In an embodiment, the coarse crushing machine is a counter-attack crusher, a hammer crusher, a jaw crusher or a gyratory crusher.

[0012] Compared with the prior art, the processing technology of the present application for preparing the mine greening guest soil spray seeding material in combination with the sandstone production can realize the comprehensive utilization of the large amount of mud powder and mud cake, two main solid wastes generated in the sandstone processing process, the mud powder from the vibration screen and the mud cake from the wastewater pressure filtration are converted into the necessary guest soil spray seeding material for mine greening, the production of greening materials is seamlessly embedded into the main production line of sandstone aggregate, forming an integrated closed loop of "mining-processing-re-greening", reducing the cost of enterprises and improving the efficiency; by using the sandstone raw material of the sandstone aggregate mine, the spray seeding material can be continuously provided during the operation period of the sandstone mine, ensuring the source of greening materials for the newly mined working face; the combination of the spray seeding material preparation process and the sandstone mining system process can realize the standardization of spray seeding material preparation, thereby ensuring the stability of the spray seeding effect; through secondary screening, the screening effect is improved, and the risk of blocking the spray nozzle of the spray seeding machine by the crushed stone is reduced; the mixing effect of the grass seeds, topsoil, fertilizer and admixture is improved through the sufficient stirring of the stirring tank, and finally the germination rate of the grass seeds is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0014] Figure 1 Figure 1 is a process flow diagram of the preparation of mine reclamation guest soil spray seeding material in combination with sandstone production according to an embodiment of the present application.

[0015] Reference signs: 1, dump truck; 2, coarse crushing plant buffer bin; 3, heavy plate feeder; 4, roller screen; 5, coarse crushing crusher; 6, second conveyor; 7, plate and frame filter press; 8, mud cake storage yard; 9, second feeder; 10, fourth conveyor; 11, first conveyor; 12, vibrating screen; 13, mud powder temporary storage bin; 14, first feeder; 15, third conveyor; 16, mixing tank; 17, mud pump. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and preferred embodiments, but the scope of protection of the present application is not limited to the following specific embodiments.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present application.

[0018] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased from the market or can be prepared by existing methods.

[0019] Please refer to Figure 1 The process of preparing mine reclamation guest soil spray seeding material in combination with sandstone production according to an embodiment of the present application mainly includes: S10, transporting the sandstone raw material of the sandstone aggregate mine to the coarse crushing plant buffer bin 2, feeding through the heavy plate feeder 3 to the roller screen 4 for screening, the screened material enters the coarse crushing crusher 5 for crushing, and the screened material under the roller screen enters the screening workshop through the first conveyor 11; Specifically, the sandstone raw material mined in the mining area is transported to the coarse crushing plant buffer bin 2 by the dump truck 1, the heavy plate feeder 3 is arranged under the coarse crushing plant buffer bin 2, the sandstone raw material is fed to the roller screen 4 for screening through the heavy plate feeder 3, the screened material enters the coarse crushing crusher 5 for crushing, the crushed material enters the subsequent sandstone processing flow, the screened material under the roller screen 4 enters the screening workshop through the first belt conveyor 11, and the screening workshop is provided with a vibrating screen 12.

[0020] Preferably, the spacing of the roller screen is adjustable, and the roller spacing is 100-150 mm. This process can adapt to different geological conditions and production requirements of mines.

[0021] S20, the roller screen 4 under-screen material is screened by the vibrating screen 12 in the screening workshop, and the vibrating screen 12 under-screen material becomes mud powder and is stacked in the mud powder temporary storage bin 13; Preferably, the mud powder temporary storage bin 13 is provided with a first feeder 14, and the mud powder is fed to the third conveyor 15 through the first feeder 14.

[0022] S30, the vibrating screen 12 over-screen material and the material crushed by the coarse crusher 5 are transported to the sandstone processing flow through the second conveyor 6; the wastewater after sandstone processing is concentrated and then enters the filter press for pressure filtration, and the mud cake after pressure filtration is stacked in the mud cake stacking field 8; Preferably, the filter press is a plate and frame filter press 7.

[0023] The mud cake stacking field is provided with a second feeder 9, and the mud cake is fed to the fourth conveyor 10 through the second feeder 9.

[0024] More preferably, the first feeder 14 and the second feeder 9 are vibrating feeders, which can accurately control the addition amount of mud powder and mud cake, and prevent large block materials from being blocked through vibration feeding.

[0025] Preferably, the vibrating screen 12 is a linear vibrating screen or a circular vibrating screen. In an embodiment, the linear vibrating screen or the circular vibrating screen is a single-layer screen, and the size of the screen hole of the single-layer screen is not greater than 25mm. Through the single-layer screen and the control of the screen hole, the risk of clogging of the spraying machine can be eliminated, the continuous construction can be ensured, and the high-quality guest soil spraying material with uniformity, high efficiency and strong adhesion can be obtained. The single-layer screen and the flexible selection reduce the purchase and maintenance cost.

[0026] S40, the mud powder is transported to the stirring tank 16 through the third conveyor 15, and the mud cake is transported to the stirring tank 16 through the fourth conveyor 10; The material entering the stirring tank 16 is subjected to multiple screening of the roller screen + vibrating screen and concentrated stirring, so that the effective control of the particle size and mixing uniformity of the final spraying material is realized, thereby guaranteeing the germination rate of the grass seeds and the final greening effect.

[0027] Preferably, the first conveyor 11, the second conveyor 6, the third conveyor and the fourth conveyor are belt conveyors. The belt conveyor can form a continuous material flow, so it has very large conveying capacity. The design of belt width, belt speed and trough angle can meet the conveying demand from several tons per hour to tens of thousands of tons, which is very suitable for the scene of sandstone production line that needs continuous and large-scale treatment of materials, can timely transport a large amount of mud powder, mud cake and gravel to the next process, and ensure that the production process does not interrupt; can easily connect the coarse crushing workshop, the screening workshop, the mud powder temporary storage bin 13, the stirring tank 16 and the like which are dispersed in space, and realize the process connection across regions.

[0028] S50, after the grass seeds, water, fertilizer and additive are added in the stirring tank 16, stirring is carried out, and the stirred guest soil spray seeding material is conveyed to a spray seeding machine through a slurry pump 17, and the spray seeding machine carries out spray seeding operation.

[0029] The proportion of the grass seeds, water, fertilizer and additive can be configured according to actual requirements.

[0030] The processing technology provided by the patent of the present application realizes comprehensive utilization of the mud powder and mud cake, which are by-products of the sandstone system, and also guarantees the standardization of the production of the guest soil spray seeding material, the stability of the quality, the reduction of the nozzle blockage and the improvement of the grass seed germination rate.

[0031] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A process for the preparation of a mine re-vegetation guest soil spray-and- seed material in conjunction with sand and gravel production, characterized by, The application relates to a sandstone processing system. The sandstone raw materials of a sandstone aggregate mine are transported to a coarse crushing workshop buffer bin, are fed to a roller screen for screening through a heavy plate feeder, the screened materials enter a coarse crushing crusher for crushing, and the screened materials enter a screening workshop through a first conveying machine; The screened materials are screened through a vibrating screen in the screening workshop, the screened materials become mud powder, and are stacked in a mud powder temporary storage bin; The screened materials and the crushed materials are conveyed to a sandstone processing process through a second conveying machine; waste water after sandstone processing is concentrated and enters a filter press for pressure filtration, and the mud cake after pressure filtration is stacked in a mud cake stacking field; The mud powder is transported to a stirring tank through a third conveying machine, and the mud cake is conveyed to the stirring tank through a fourth conveying machine; Grass seeds, water, fertilizers and additives are added to the stirring tank, and the stirred customer soil spray seeding material is conveyed to a spray seeding machine through a mud pump, and the spray seeding machine performs spray seeding operation.

2. The process of claim 1, wherein the process of preparing mine reclamation guest soil spray-and-pray material from aggregate production is characterized by, The mud powder temporary storage bin is provided with a first feeder, the mud powder is fed to the third conveying machine through the first feeder, the mud cake stacking field is provided with a second feeder, and the mud cake is fed to the fourth conveying machine through the second feeder.

3. The process of claim 2, wherein the process of preparing mine reclamation guest soil spray-and-pray material from construction sand and gravel, further comprises: The first conveying machine, the second conveying machine, the third conveying machine and the fourth conveying machine are belt conveyors.

4. The process of claim 2, wherein the process of preparing mine reclamation guest soil spray-and-pray material from construction sand and gravel, further comprises: The first feeder and the second feeder are vibrating feeders.

5. The process of claim 1, wherein the process of preparing mine reclamation guest soil spray-and- seed mulch material from construction sand and gravel is characterized by, The distance between the rollers of the roller screen is adjustable, and the distance between the rollers is 100-150 mm.

6. The process of manufacturing mine reclamation guest soil spray-and- spread material in conjunction with aggregate production of claim 1, wherein, The vibrating screen is a linear vibrating screen or a circular vibrating screen.

7. The process of claim 1, wherein the process of preparing mine reclamation guest soil spray-and- seed mulch material from construction sand and gravel production is characterized by, The linear vibrating screen or the circular vibrating screen is a single-layer screen, and the size of the screen hole of the single-layer screen is not greater than 25 mm.

8. The process of claim 1, wherein the process of preparing mine reclamation guest soil spray-and- seed material from construction sand and gravel production is characterized by, The coarse crushing crusher is a counter-attack crusher, a hammer crusher, a jaw crusher or a rotary crusher.

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