Characteristics And Process Of Gangue Sand Making


Coal gangue is a kind of solid waste discharged in the process of coal mining and coal washing. It is a kind of black gray rock with low carbon content and hard

  • Easily Improve The Quality Of Machine Sand
  • Configuration Of Sand Production Line
  • Causes And Solutions Of Sand Making Machine Blockage

Solution Scheme

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Coal gangue is a kind of solid waste discharged in the process of coal mining and coal washing. It is a kind of black gray rock with low carbon content and harder than coal. But coal gangue is not useless waste. After a series of processing, it can be made into machine-made sand, which can be used in railway, highway, construction and other industries. With the shortage of natural sand, the heat of machine-made sand and the recycling of resources, coal gangue is gradually concerned.

Characteristic analysis of coal gangue sand making

Production process and equipment of gangue sand

The production process of coal gangue sand making mainly consists of feeding, coarse crushing, medium and fine crushing, sand making, screening, transportation and other links, which can be divided into fixed production line and mobile production line. The commonly used equipment includes vibrating feeder, vibrating screen, belt conveyor, jaw crusher, impact crusher, sand making machine and other equipment.

Process and equipment

Initial Breaking Stage: main processing equipment jaw crusher, auxiliary equipment vibration feeder.

Primary Crushing Process: the vibrating feeder feeds the large coal gangue directly, evenly and quantitatively to the jaw crusher, and the material is crushed by the jaw crusher, then discharged from the discharge port, and transported to the medium and fine crushing section by the belt conveyor.

Medium And Fine Crushing Stage: main processing equipment impact crusher, auxiliary equipment vibrating screen.

Medium And Fine Crushing Process: the coarse broken coal gangue is directly fed to the impact crusher by the belt conveyor, and the material is broken again by the impact crusher, and then it goes out through the discharge port, and then it is taken to the vibrating screen for screening by the belt conveyor, and the screened material is divided into two directions, the larger one returns to the impact crusher and then it is broken, and the smaller one is directly transported to the sand making section.

Sand Making Stage: main processing equipment sand making machine, auxiliary equipment vibrating screen.

Sand Making Process: the coal gangue after the secondary fine crushing is directly fed into the material inlet of the sand making machine by the belt conveyor, and further processed (broken and shaped) by the sand making machine, the coal gangue sand with the discharge particle size of less than 5mm and uniform particle size can be obtained.

At present, the natural sand and artificial sand resources are scarce, and the aggregate in the sand industry is in short supply. The coal gangue sand making is a kind of waste reuse, which has a wide range of resources and a low cost. At present, it is relatively popular. The process of coal gangue sand production line is as described above, but there are different ways and prices for its combination. Users need to select a suitable sand production line according to their actual needs.

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