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Sand washing system and washed sand preparing process

A preparation process and water-washing sand technology, applied in the field of water-washing sand, can solve the problem of high mud content and achieve the effects of high sand production rate, reduced mud content and high strength

Active Publication Date: 2020-07-10
厦门焕金建筑垃圾资源化处置有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, after sand washing by the above-mentioned water-washing sand system, the mud content of the water-washed sand is greater than 0.9%, and the mud content is relatively high.

Method used

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  • Sand washing system and washed sand preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, a water washing sand system includes a screening machine 1, a sand fishing machine 2, a conveyor belt 4, a first dewatering screen 3, a second dewatering screen 7, a drum machine 5, a wheel sand washing machine 6, a static tank 8 and The third dehydration screen 9. The screening machine 1 is used to separate sand and gravel, and the sand dredger 2 is used to wash the separated sand for the first time. A water delivery pipe is installed at the feeding port of the sand dredge machine 2, and the water delivery pipe transports water to the sand dredge. 2. When the sand enters the sand dredger 2, it is immediately mixed with water for the first sand washing. The first dewatering screen 3 is used for the first dehydration of the sand after the first elutriation, and the conveyor belt 4 is used for transporting the first dewatered sand to the circular tumbler 5 . Circular drum machine 5 is used for second time elutriating sand. The tumbling machin...

Embodiment 2

[0049] Such as figure 1 Shown, a kind of washing method of washing sand:

[0050] S1: Screening, put 100kg of raw materials into the screening machine 1 for screening, and screen out sand with a particle size of less than 5mm;

[0051] S2: For the first elutriation, the sand screened out by the screening machine 1 is transported to the sand dredge machine 2, and water is injected to perform the first elutriation on the sand;

[0052] S3: Dehydration, the sand after the first elutriation is transported to the first dewatering screen 3 for dehydration, and the sand is sent to the conveyor belt 4 after dehydration;

[0053] S4: For the second elutriation, the conveyor belt 4 sends the sand into the tumbler 5, and adds 100kg of water (which contains 10% of domestic sewage, and the nitrogen source content in the domestic sewage) at the feed inlet of the tumbler 5 5-10%, carbon source content is 10-15%), pH regulator (made by mixing 30g Alcaligenes (A.faecalis) with 2.4kg molar co...

Embodiment 3

[0057] Such as figure 1 Shown, a kind of washing method of washing sand:

[0058] S1: Screening, put 100kg of raw materials into the screening machine 1 for screening, and screen out sand with a particle size of less than 5mm;

[0059] S2: For the first elutriation, the sand screened out by the screening machine 1 is transported to the sand dredge machine 2, and water is injected to perform the first elutriation on the sand;

[0060] S3: Dehydration, transport the sand after the first elutriation to the first dewatering screen for 3 dehydration, and send the sand to the conveyor belt 4 after dehydration;

[0061] S4: For the second elutriation, the conveyor belt 4 sends the sand into the tumbler 5, and adds 100kg of water (which contains 10% of domestic sewage, and the nitrogen source content in the domestic sewage) at the feed inlet of the tumbler 5 5-10%, carbon source content is 10-15%), pH regulator (made by mixing 20g of Alcaligenes (A.faecalis) with 1.6kg of glucose so...

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Abstract

The invention relates to the field of washed sand, in particular to a sand washing system and a washed sand preparing process. The sand washing system comprises a screening machine, a bailing machine,a first dewatering screen, a second dewatering screen, a circular rolling machine and a wheel type sand washing machine, the screening machine is used for separating dinas, a feeding opening of the bailing machine communicates with a discharging opening of the screening machine, the bailing machine is used for first-time sand washing, a feeding opening of the first dewatering screen communicateswith a discharging opening of the bailing machine, the first dewatering screen is used for dewatering sand after first-time washing, a feeding opening of the circular rolling machine is connected witha discharging opening of the dewatering screen, the circular rolling machine is used for second-time sand washing, a feeding opening of the wheel type sand washing machine communicates with a discharging opening of the circular rolling machine, the wheel type sand washing machine is used for third-time sand washing, a feeding opening of the second dewatering screen communicates with a dischargingopening of the wheel type sand washing machine, the second dewatering screen is used for dewatering sand after third-time washing, through three times of washing, the mud containing rate of washed sand is lower than 0.9%, and when the washed sand is repeatedly used for preparing concrete, concrete strength is higher.

Description

technical field [0001] The invention relates to the field of washed sand, more specifically, it relates to a washed sand system and a washing sand preparation process. Background technique [0002] When recycling construction waste, the large pieces of wood in the construction waste will be removed first, then the construction waste will be screened out of the concrete blocks, and the concrete blocks will be broken and screened, because the location where the concrete blocks contain a large amount of Mud, so there will be more mud on the surface of the sand, and the screening cannot separate the mud from the sand, so it is necessary to wash the sand to remove the mud and get clean washed sand. Clean washed sand can be reused in the construction industry as a building material. In the process of washing the sand with water to remove mud, it is necessary to process the sand with a water washing sand system. [0003] The Chinese patent with the publication number CN209577009U...

Claims

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Application Information

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IPC IPC(8): B03B9/06B03B1/04C02F3/34C02F101/38
CPCB03B9/065B03B1/04C02F3/34C02F2101/38Y02W30/58
Inventor 林哲文
Owner 厦门焕金建筑垃圾资源化处置有限公司
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