Cement production license reform rules releasedDate: 2019-06-25 Views:
Is cement production harmful to environmental protection?Although many people have not used cement, everyone has seen it. Cement is a gray powder, and when it is seen it is associated with dust pollution. In fact, this is a misunderstanding or misjudgment.
There are three processes in cement production: grinding, burning, and grinding. It is raw material before burning and clinker after burning. The front grinding is to grind the raw material, and the latter grinding is to grind the clinker.
Since they are crushed and ground, it will definitely produce dust. There is no dust in the cement plant. How is it treated in cement production? First of all, from the perspective of improving work efficiency, the actual production is “more and less grinding”. Try to replace the grinding function with the broken function, and save energy and reduce the occurrence of dust. Secondly, from the perspective of improving work efficiency, the actual selection of the powder machine in the mill system, as soon as the required fineness is reached, immediately off the mill. Once again, from the perspective of improving work efficiency and environmental protection, dust collection equipment is equipped. The raw materials are transported into the cement plant by freight, and they cannot be wasted; when the finished cement products are commodities, they are money, and they cannot be wasted. Therefore, the cement factory is clean and no dust is visible.
Let me talk about carbon emissions first. Since the advent of cement in 1824, scientists have continued to explore ways to improve cement production. The three processes of grinding, burning and grinding have continued to this day, and it has been scientifically proven that they cannot be changed. Cement production is a complex series of physicochemical reactions that must be burned. Before people are environmentally conscious, all cement plants are working hard to save fuel and reduce production costs. When people are environmentally conscious, the work in this area is tighter. Today's cement production has kept fuel use to a minimum; and carbon emissions have been kept to a minimum. The combined heat loss and combined power consumption of cement do not exceed 120 kg of standard coal per ton, which is a very low carbon emission industry.
Let's talk about harmful gases. The raw material of cement is calcium carbonate ore, which is inorganic; the finished cement is also inorganic. Inorganic production does not produce a large amount of harmful gases like organic production. Therefore, cement production is harmless to environmental protection.
Cement production is not only harmless to the environment, but also beneficial. Pure waste-to-energy generates harmful gases. Harmful gases can be disposed of by co-processing with cement kilns.
Finally, let's talk about the location of the cement plant. All cement production must be placed in close proximity to the mine to reduce the distance traveled by the material. As we all know, the mining area is far from the city and is sparsely populated. While contributing to urbanization, employees in the cement industry always put themselves outside the city. It must be said that the selfless dedication of cement people to the whole society is commendable.
Although sandstorms have been controlled, sanitation workers clean the streets every day, but our cities always have a lot of dust. How did the dust come from? The chief culprit of dust is the decoration industry. Although there is no demolition site, the construction waste is generated all the time in the city. When I was poor, the wedding decoration was just a four-day landing. Now the standard of living has improved, and it has been refurbished every three to five years. Moreover, in addition to shovel the wall skin, the tiles are removed, and the non-bearing walls and even the load-bearing walls are cut. This is how dust comes. In the past, the community could receive a renovation deposit for the owner and was later cancelled. A series of questions, such as who manages, how to manage, and how the construction waste produced by the decoration is consumed, is the key to controlling urban dust. I hope that the whole society will pay attention to this and consciously reduce urban dust. It is also hoped that legislation will gradually control the dust generated by the decoration, so that our city is not only beautiful, but also clean. Grasping the problem must grasp the key, do not control the source of the dust generated by the decoration, PM2.5 is beyond control.