At the basis of the production of cakes, the main cause of air pollution is the clinkers in the stage boiled, roasted; Shell beans, beans from the crushing area, mixing raw materials. The air temperature in the area was also higher than the roasting temperature of outside air by using coal furnaces. The oven must be built in the area to ensure the sealed temperature and does not cause difficulties for workers.
đang được dịch, vui lòng đợi..