Sand making system and method using high frequency screen under strong wind conditions

Abstract

The invention provides a sand making system using a high-frequency sieve under strong wind conditions. The sand making system comprises a dewatering sieve, a sand dust recovery station, a water tank, a slurry processing device, a finished product collecting device, a pisolite sieve, a fast sand dust separator and a sewage processing device. A sand making method for the sand making system adopts the following steps that: (1) stone dust features of stone used by rough material sources are analyzed; (2) the water spraying intensity and the specific installing position of a spraying pipe are determined; (3) the overflowing opening height of the fast sand dust separator is adjusted; (4) the hole diameter of a sieve net of the high-frequency sieve and the sewage discharging quantity of the slurry processing device are regulated; and (5) equipment is started for sand making. The sand making system and the sand making method have the advantages that through the modes of high-frequency sieve spraying, precipitation sand collection and overflow dust removal, the problem of conflict between dust extinguishing and screening percentage can be effectively solved; the dust-free production is realized; the operation environment is improved; and the occupational health harm caused by dust is avoided.

Description

technical field [0001] The invention belongs to the field of stone sand making, and in particular relates to a sand making system and method using a high-frequency screen under strong wind conditions. Background technique [0002] In the prior art sand making system using high-frequency sieve under strong wind conditions, in order to solve the problem of "flying dust", sprinkler pipes are added in the places where "flying dust" is easy to occur in the system, and the "flying dust" can be effectively suppressed after spraying, but A large spray volume is likely to cause new problems, and a small spray water cannot effectively suppress "dust". [0003] In the rainy season, the moisture content of wool and semi-finished materials varies greatly, and it is difficult to adjust the screening equipment according to the moisture content, resulting in unstable quality of finished pebbles and sand. [0004] The spiral classifier will take away the particles below 2.5mm at the same ti...

AI Technical Summary

Problems solved by technology

When such incidents occur, the sand fineness modulus will decrease, the content of stone powder will increase, and the diameter of small stones will exceed the standard. In severe cases, the entire line will be shut down

[0013] 2. The problems caused by spiral classifying machine sand washing are basically the same as those in wet production. The difference is that the washing amount is less and the sand loss is relatively small, but 15%-20% loss will still occur.

[0014] 3. The "semi-dry method" requires "dry breaking and dry sieving". The dust problem is a chronic problem that is difficult to cure. It is not a big problem in production in an environment with no or little wind. However, sand construction in windy areas such as Huangjinping Hydropower Station The dust generated during the production of the stone system is similar to "sandstorm", and the visibility of the system during production cannot meet the requirements of observation and maintenance, so the failure rate of the system is bound to be high, and the effective operation time is shortened

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