With the acceleration of urbanization process and the promotion of small towns, constructional garbage has become a troublesome problem. It is estimated that it would produce 500 tons to 600 tons of constructional garbage per 10,000 square meters during the construction process. And it would produce more than 200 million tons of constructional garbage when removing ten thousand square meters of old buildings.
The amount of constructional garbage has held 30% to 40% of total municipal garbage. Faced with so large constructional garbage, the conventional disposal method is to collect the waste together for landfill or stacking by sanitation department. Dumping and landfill of constructional garbage would occupy a lot of land, pollute the city environment. With the evaporation and infiltration of constructional garbage, it brought vary degrees of effects to the deep water of surface water.
The recycling of constructional garbage could protect the environment and reduce the pollution to environment. We adopted scientific management and effective measures for recycling and it could save a lot of constructional funds and resources
Recycling of constructional garbage is a systemic project. We should start our work from transportation, production, reusing and other aspects of constructional garbage. And we also need the support and guide of government. Recycling of constructional garbage meets the strategies of circular economy and sustainable development. Crushing equipment could achieve the recycling of constructional waste, reduce the transportation cost and avoid the second pollution.
Ore re-selection process is composed by a series of continuous operation. The nature of the operation can be divided into three parts: preparation operation, sorting operation, product handling operation.
1. Preparation operation concludes the crushing and grinding to separate the single ore. We should classify the ores according to the particle size. After the selection, it would facilitate the choice of operating conditions and improve the separation efficiency.
2. Sorting operation is the main process of ore sorting. The simple sorting process is composed of the unit operation, such as heavy media separation.
3. Product handling operation mainly refers to the dewatering of fine ores, tailings conveyance and stockpiling.
The mining equipment must have the following characteristics in order to handle the modern mineral.
1. With large handling capacity, we could create more benefits to meet the requirements of modern mineral processing operation.
2. With sample structure, large production capacity, stable database, long service life
3. Widely application, easy operation, low consumption.
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