Atmospheric Pollution Enterprises such as iron and steel, building materials, non-ferrous metals, petroleum, chemical industry, pharmaceuticals and mineral exploitation shall strengthen fine management and adopt measures such as centralized collection and treatment to strictly control the emission of dust and gaseous pollutants.
Industrial production enterprises shall take measures such as sealing, enclosure, covering, cleaning and sprinkling to reduce the emission of dust and gaseous pollutants from the storage, transmission, loading and unloading of internal materials. The Ministry of
Ecology and Environment and other five ministries and commissions "Opinions on Promoting the Implementation of Ultra-low Emission in Cement Industry" require unorganized emission control measures. Unorganized emission sources such as material storage, material transportation and production process shall adopt effective control facilities such as sealing and sealing on the premise of ensuring safe production. The unorganized emission control facilities and production facilities operate normally synchronously, there is no visible smoke and dust escaping from the dust-producing points and production facilities, and the plant area is clean and clean without dust accumulation. Specific requirements for
material storage: limestone, shale, mudstone, coal gangue, raw coal and other raw materials and fuels shall be stored in the closed material shed. The clinker is stored in a closed manner. Raw meal, dry coal ash, slag powder, finished cement and other powdery materials shall be stored in closed bins and storage tanks.

Can not imagine how there is such a material storage scenario!
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