Quartz sand refining and recycling system

Abstract

The utility model relates to the technical field of quartz sand processing, and discloses a quartz stone refining recovery system, which comprises a pretreatment module, an iron removal module, a three-stage powder recovery module and a two-stage recovery module, the pretreatment module is used for crushing quartz stone raw ore and desliming to obtain mud sand, the iron removal module is used for removing iron from the mud sand to obtain fine sand and iron sand, and the three-stage powder recovery module is used for recycling the iron sand. The third-level powder recycling module is used for refining and recycling iron sand into third-level powder, the second-level recycling module is used for refining and recycling fine sand into first-level sand and second-level sand, and four products with different particle sizes, different silicon dioxide concentrations, different whiteness and different iron contents are obtained through refining and recycling.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz stone processing, in particular to a quartz sand refinement and recovery system. Background Art

[0002] Quartz processing is the process of cutting, grinding, polishing and other processing of quartz to make various furniture, decorative pieces, countertops and other products. Quartz is a kind of artificial stone with high hardness, high wear resistance, temperature resistance and anti-fouling. The by-products produced by quartz processing mainly include: quartz fragments, quartz powder, quartz residue and quartz particles, etc. The by-products produced after quartz processing need to be reasonably handled and reused.

[0003] In the prior art, the invention patent (CN105032602B) discloses a method for efficiently preparing ultra-white quartz sand from vein quartz ore, and the implementation process is as follows: the vein quartz ore undergoes a full process of crushing, grinding, desludging, grading, desludging, magnetic separation, and grading, and the process setting of "more crushing and less grinding", grading desludging, and segmented magnetic separation. This preparation method only prepares a single by-product, and the reuse rate of all by-products is not high.

[0004] Based on this, the technical problem solved in this case is: how to provide a system for processing, refining and recycling quartz stone. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a quartz sand refinement and recovery system.

[0006] The technical solution of the utility model is:

[0007] A quartz stone refinement and recovery system comprises a pretreatment module, an iron removal module, a tertiary powder recovery module and a secondary recovery module, wherein the pretreatment module is used for crushing and desludging quartz stone ore to obtain mud sand, the iron removal module is used for removing iron from mud sand to obtain concentrated sand and iron sand, the tertiary powder recovery module is used for refining and recovering iron sand into tertiary powder, and the secondary recovery module is used for refining and recovering concentrated sand into primary sand and secondary sand.

[0008] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0009] The utility model obtains four products with different particle sizes, silicon dioxide concentrations, whiteness and iron contents through refinement and recovery, and collects them in the first sand pool and the second sand pool, the third powder bin, the first sand bin and the second sand bin respectively. Products with different characteristics can be processed or reused later, thereby achieving high utilization rate of raw materials and facilitating subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1It is a flow chart of the utility model. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] Example 1

[0013] See also Figure 1 A quartz stone refining and recovery system includes a pretreatment module, an iron removal module, a tertiary powder recovery module and a secondary recovery module. The pretreatment module is used to crush the quartz stone ore and desludging to obtain mud sand, the iron removal module is used to remove iron from the mud sand to obtain concentrated sand and iron sand, the tertiary powder recovery module is used to refine and recover the iron sand into tertiary powder, and the secondary recovery module refines and recovers the concentrated sand into primary sand and secondary sand.

[0014] In actual use, the quartz stone ore is passed through the pretreatment module for preliminary treatment to obtain mud sand, and the mud sand is further refined, that is, it is further processed through the iron removal module to obtain concentrated sand and iron sand. At this time, the iron sand will be refined and recovered through the tertiary powder recovery module to separate the tertiary powder, and the concentrated sand will be refined and recovered through the secondary recovery module to obtain primary sand and secondary sand respectively. Three products are obtained, namely Product A (tertiary powder), Product B (primary sand) and Product C (secondary sand).

[0015] Furthermore, the pretreatment module comprises a ball mill, a primary desludging bucket and a secondary desludging bucket, and the quartz stone passes through the ball mill, the primary desludging bucket and the secondary desludging bucket in sequence to obtain mud, sand and a first overflow.

[0016] In this embodiment, the quartz ore is firstly crushed by a ball mill, and then the crushed material of the ball mill is desludged by a primary desludging bucket and a secondary desludging bucket to obtain mud, sand and a first overflow. Specifically, the first overflow is actually the fourth product, namely product D.

[0017] Furthermore, it also includes a vibrating screen, which is connected between the ball mill and the first-level desludging bucket. The vibrating screen is used to screen the particle size after the ball mill is crushed. The screened material of the vibrating screen is returned to the ball mill for further crushing, and the screened material of the vibrating screen is desludged through the first-level desludging bucket.

[0018] In actual situations, the quartz ore initially crushed by the ball mill needs to be screened by a vibrating screen to effectively prevent incompletely crushed quartz ore from entering the primary desludging bucket for desludging. The material on the vibrating screen is incompletely crushed quartz ore, which will return to the ball mill for further crushing. Conversely, the material under the vibrating screen is qualified quartz ore, which normally flows to the primary desludging bucket for desludging.

[0019] Preferably, the iron removal module comprises a flow screen, a flat magnetic separator, a first desludging bucket and a high gradient magnetic separator, and the mud and sand are sequentially de-ironized by the flow screen, the flat magnetic separator, the first desludging bucket and the high gradient magnetic separator to obtain concentrated sand and iron sand.

[0020] In this embodiment, the pretreated mud and sand will be separated into fine sand and iron sand by the iron removal module. Specifically, the mud and sand will first pass through the flow screen to desludify the first-level desludging bucket to obtain mud and sand that meets the specifications and enter the flat magnetic separator for preliminary magnetic separation, and after the preliminary magnetic separation, it will be desludged by the first desludging bucket, and finally the final magnetic separation will be completed by the high gradient magnetic separator to obtain fine sand and iron sand, among which the iron sand will be refined and recovered by the tertiary powder recovery module, and the fine sand will be refined and recovered by the secondary sand recovery module.

[0021] Furthermore, the flat plate magnetic separator initially magnetically separates sand and iron sand, and the iron sand and the iron sand obtained by removing iron from the high-speed rail magnetic separator enter the tertiary powder recovery module together.

[0022] In this embodiment, the flat-plate magnetic separator will obtain sand and iron sand through preliminary magnetic separation, of which the iron sand directly enters the tertiary powder recovery module for refinement and recovery, and the sand continues to be desludged and magnetically separated to obtain concentrated sand and iron sand. The degree of separation of concentrated sand and iron sand can be improved through secondary magnetic separation.

[0023] Preferably, the tertiary powder recovery module comprises a tertiary powder primary desludging hopper, a tertiary powder secondary desludging hopper and a pressure vacuum filter, and the iron sand passes through the tertiary powder primary desludging hopper, the tertiary powder secondary desludging hopper and the pressure vacuum filter in sequence to obtain tertiary powder and filtrate.

[0024] In this embodiment, the iron sand obtained by the iron removal module will enter the tertiary powder recovery module for refined recovery. Specifically, the tertiary powder is obtained by passing through the tertiary powder primary desludging bucket, the tertiary powder secondary desludging bucket and the pressure vacuum filter in sequence, wherein the filtrate obtained by the pressure vacuum filter is a by-product, that is, product D.

[0025] More preferably, the secondary recovery module includes a primary sand recovery unit and a secondary sand recovery unit, the primary recovery unit is used to obtain primary sand and a second overflow by grading and multiple desludging of the concentrated sand, and the secondary sand recovery unit is used to obtain secondary sand and a third overflow by multiple desludging of the second overflow.

[0026] In this embodiment, the concentrated sand obtained by the iron removal module will be passed through the secondary recovery module to obtain primary sand and secondary sand. Specifically, the concentrated sand will first pass through the primary sand recovery unit to obtain primary sand, and the by-product produced by the primary sand recovery unit, that is, the second overflow, will be refined and recovered through the secondary sand recovery unit to obtain secondary sand and by-product, the third overflow. Specifically, the third overflow is product D.

[0027] Furthermore, the primary recovery unit includes a hydraulic classifier, a second desludging bucket, a first dewatering screen and a third desludging bucket. The refined sand passes through the hydraulic classifier, the second desludging bucket and the first dewatering screen in sequence to obtain primary sand. The overflow of the second desludging bucket passes through the third desludging bucket and then passes through the secondary recovery unit to obtain secondary sand.

[0028] In this embodiment, the concentrated sand is firstly classified by a hydraulic classifier, and then passes through the second desludging bucket and the first dewatering screen in sequence to obtain primary sand, i.e., product B. The second overflow obtained by the classification of the hydraulic classifier is refined and recovered by the secondary sand recovery unit. In particular, the overflow of the second desludging bucket will be desludged by the third desludging bucket and then refined and recovered by the secondary sand recovery unit to obtain secondary sand, i.e., product C.

[0029] Furthermore, the secondary recovery unit includes a primary bucket for secondary sand, a secondary bucket for secondary sand and a second dewatering screen, and the second overflow passes through the primary bucket for secondary sand, the secondary bucket for secondary sand and the second dewatering screen in sequence to obtain secondary sand.

[0030] In this embodiment, the second overflow obtained by the primary sand recovery unit will successively pass through the secondary sand primary bucket, the secondary sand secondary bucket and the second dewatering screen to obtain secondary sand. Specifically, the by-product obtained by desludging through the secondary sand primary bucket and the secondary sand secondary bucket, the third overflow, is product D.

[0031] Preferably, it also includes a first sand bin, a second sand bin, a powder bin, a first sand pool, and a second sand pool. The first-level sand is collected in the first sand bin, the second-level sand is collected in the second sand bin, the third-level powder is collected in the powder bin, the first overflow and the third overflow are collected in the first sand pool, and the filtrate is collected in the second sand pool.

[0032] In this embodiment, product A is tertiary powder, which is collected in the powder bin; product B is primary sand, which is collected in the first sand bin; product C is secondary sand, which is collected in the second sand bin; and product D is a liquid by-product, which is collected in the first sand pool and the second sand pool, respectively.

[0033] Table 1 below is a detailed list of the characteristics of the four products:

[0034] Table 1 Detailed list of characteristics of four products

[0035]

[0036]

[0037] It should be noted here that the whiteness range of product B is related to the screened particle size range, for example, the whiteness range of 20-40 mesh particle size is 57-65 degrees.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A quartz sand refinement and recovery system, characterized in that: It includes a pretreatment module, an iron removal module, a tertiary powder recovery module and a secondary recovery module. The pretreatment module is used to crush the quartz stone ore and desilt to obtain mud sand. The iron removal module is used to remove iron from the mud sand to obtain concentrated sand and iron sand. The tertiary powder recovery module is used to refine and recover the iron sand into tertiary powder. The secondary recovery module refines and recovers the concentrated sand into primary sand and secondary sand.

2. A quartz sand refinement and recovery system according to claim 1, characterized in that: The pretreatment module comprises a ball mill, a primary desludging bucket and a secondary desludging bucket, and the quartz stone passes through the ball mill, the primary desludging bucket and the secondary desludging bucket in sequence to obtain mud, sand and a first overflow.

3. A quartz sand refinement and recovery system according to claim 2, characterized in that: It also includes a vibrating screen, which is connected between the ball mill and the first-level desludging bucket. The vibrating screen is used to screen the particle size after the ball mill is crushed. The screened material of the vibrating screen is returned to the ball mill for further crushing, and the screened material of the vibrating screen is desludged through the first-level desludging bucket.

4. A quartz sand refinement and recovery system according to claim 3, characterized in that: The iron removal module comprises a flow screen, a flat magnetic separator, a first desludging bucket and a high gradient magnetic separator. The mud and sand are sequentially de-ironized by the flow screen, the flat magnetic separator, the first desludging bucket and the high gradient magnetic separator to obtain concentrated sand and iron sand.

5. A quartz sand refinement and recovery system according to claim 4, characterized in that: The flat plate magnetic separator performs preliminary magnetic separation to obtain sand and iron sand, and the iron sand and the iron sand obtained by removing iron from the high-speed rail magnetic separator enter the tertiary powder recovery module together.

6. A quartz sand refinement and recovery system according to claim 5, characterized in that: The tertiary powder recovery module includes a tertiary powder primary desludging bucket, a tertiary powder secondary desludging bucket and a pressure vacuum filter. The iron sand passes through the tertiary powder primary desludging bucket, the tertiary powder secondary desludging bucket and the pressure vacuum filter in sequence to obtain tertiary powder and filtrate.

7. A quartz sand refinement and recovery system according to claim 6, characterized in that: The secondary recovery module includes a primary sand recovery unit and a secondary sand recovery unit. The primary sand recovery unit is used to obtain primary sand and a second overflow by grading and desludging the concentrated sand for multiple times, and the secondary sand recovery unit is used to obtain secondary sand and a third overflow by desludging the second overflow for multiple times.

8. A quartz sand refinement and recovery system according to claim 7, characterized in that: The primary sand recovery unit includes a hydraulic classifier, a second desludging bucket, a first dewatering screen and a third desludging bucket. The refined sand passes through the hydraulic classifier, the second desludging bucket and the first dewatering screen in sequence to obtain primary sand, which is collected in the first sand bin. The overflow of the second desludging bucket passes through the third desludging bucket and then passes through the secondary recovery unit to obtain secondary sand.

9. A quartz sand refinement and recovery system according to claim 8, characterized in that: The secondary sand recovery unit comprises a primary bucket for secondary sand, a secondary bucket for secondary sand and a second dewatering screen, and the second overflow passes through the primary bucket for secondary sand, the secondary bucket for secondary sand and the second dewatering screen in sequence to obtain secondary sand.

10. A quartz sand refinement and recovery system according to claim 9, characterized in that: It also includes a first sand bin, a second sand bin, a powder bin, a first sand pool, and a second sand pool. The first-level sand is collected in the first sand bin, the second-level sand is collected in the second sand bin, the third-level powder is collected in the powder bin, the first overflow and the third overflow are collected in the first sand pool, and the filtrate is collected in the second sand pool.

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