Waste limestone environmentally-friendly reuse dry sand making method

Abstract

The invention discloses a waste limestone environmentally-friendly reuse dry sand making method. The method comprises the steps of riddle, coarse crushing, first screening, fine crushing, second screening, shaping, sand making, humidification and the like. Used equipment comprises a two-stage impact crusher, a shaping machine, a screening machine and the like, and a dry mist dust removal system isused in the entire production process. Used raw materials comprises low-grade waste limestone such as mine high-magnesium and high-silicon, stone scraps, sorted construction waste and the like, and through the cooperation of the production process, the recycling efficiency of waste limestone is improved, the production technology is advanced, and the production process is safe, stable, environmentally-friendly and sanitary, ranking the leading level in the country. Workshop buildings for fine aggregate machine sand making production line are closed, and dust collectors and dry mist dust suppression devices can be adopted to relevant dust raising points, so that the recycling of waste limestone is efficiently achieved, the dust raising is reduced, the method is more environmentally-friendly, the development prospect is better, and the practicability is stronger.

Description

technical field [0001] The invention belongs to the technical field of waste limestone recovery and utilization, and in particular relates to a dry sand making method for environmental protection and reuse of waste limestone. Background technique [0002] Mineral resources are one of the main resources that human beings rely on for survival. They are the basis and guarantee for social and economic development. The rapid development of social economy has put forward higher requirements for mineral resources. Large-scale mining and utilization have made great contributions to the social economy. However, due to excessive mining or disorderly mining, geological disasters such as environmental pollution and soil erosion in a certain area have caused the ecological environment around the mine to gradually deteriorate, and even limited the development of the regional economy; at present, most open-pit mines are mining Rock construction mines provide a large amount of building mate...

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Problems solved by technology

[0002] Mineral resources are one of the main resources that human beings rely on for survival. They are the basis and guarantee for social and economic development. The rapid development of social economy has put forward higher requirements for mineral resources. Large-scale mining and utilization have made great contributions to the social economy. However, due to excessive mining or disorderly mining, geological disasters such as environmental pollution and soil erosion in a certain area have caused the ecological environment around the mine to gradually deteriorate, and even limited the development of the regional economy; at present, most open-pit mines are mining Rocky construction mines provide a large amount of building materials for the society. Mine managers lack the safety awareness of environmental protection, which seriously affects the natural landscape and ecological environment. Therefore, in order to improve the surrounding environment of mines, it is necessary to speed up the comprehensive renovation of open pit abandoned mines

[0003] However, the current waste limestone recycling production process still has some unreasonable factors in the process of recycling waste limestone. The existing waste limestone recycling production process is easy to generate dust and pollute the environment when recycling waste limestone. It affects the health of workshop workers, and the recovery efficiency is low, and the waste limestone cannot be comprehensively utilized

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