An air-injection quartz sand hydraulic separation method

Abstract

The invention relates to the technical field of quartz sand processing, and discloses a gas-injection type quartz sand hydraulic separation method. The separation is carried out in a sorting box, which includes the following steps: step A, feeding gas into the sorting box The air flow direction of the gas is directed upward; step B, the sand-water mixture is introduced, and the quartz sand particles and the gas are mixed to form a sand-water mixture; the sand-water mixture is 100M 3 / H~300M 3 The flow rate of / H is passed into the sorting box from the side wall of the sorting box; step C, completing the sorting, after the sorting is completed, the quartz sand particles in the sorting chamber are discharged and collected. In the present invention, quartz sand is screened at multiple stages through gas-liquid mixing.

Description

technical field [0001] The invention relates to the technical field of quartz sand processing, in particular to an air injection type quartz sand hydraulic separation method. Background technique [0002] At present, the production process of quartz sand in China mainly includes: mining, crushing, cleaning, drying, sorting, etc., and the sorting is generally carried out by vibrating screening machines. Set the particle size for sub-sieving to obtain quartz sand with different particle sizes (mesh numbers), but there are many problems in this screening method. First, the particle size of the sorted quartz sand is not uniform, and it is easy to mix some particles into the larger sand particles. The fine particles make the standard sand after sieving have different mesh sizes, resulting in the problem that the particle size distribution of the finished sand is not up to standard; secondly, during the working process of the vibrating screening machine, due to the impact between ...

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Problems solved by technology

[0002] At present, the production process of quartz sand in China mainly includes: mining, crushing, cleaning, drying, sorting, etc., and the sorting is generally carried out by vibrating screening machines. Set the particle size for sub-sieving to obtain quartz sand with different particle sizes (mesh numbers), but there are many problems in this screening method. First, the particle size of the sorted quartz sand is not uniform, and it is easy to mix some particles into the larger sand particles. The fine particles make the standard sand after sieving have different mesh sizes, resulting in the problem that the particle size distribution of the finished sand is not up to standard; secondly, during the working process of the vibrating screening machine, due to the impact between the sand particles or between the sand particles and the sieve plate, a large amount of dust, and the main component of dust, silicon dioxide, poses a great threat to human health. If the vibrating screen is not tightly sealed, the dust will fly around in the production area. At the same time, the sand after sorting needs to be further cleaned. Finally, due to During the sand sorting process, the sand and the sieve plate of the vibrating screen are constantly collided, which reduces the durability of the sieve plate and makes the sieve plate need to be replaced after a period of use

Therefore, the method of vibrating screening is only suitable for small batch production

[0003] However, the current conventional process flow of quartz sand needs to clean and dry the broken sand particles before sorting, which makes the production process longer and is not suitable for enterprises with large quartz sand production. Based on the above problems, the applicant developed Developed a sorting method that can shorten the production process of quartz sand

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