Pollution problems of refractories plant exists make Shanghai , Beijing , Guangzhou and other cities take measures to stop or limit the relocation for plant building in the urban areas. Industrial furnace is key sources of pollution.

In recent years, focusing on the promotion of environmental protection measures are: a) high-efficiency filter purifier smoke . Focus on the promotion of efficient dust purification baghouse , due to the bag limited, require into the baghouse flue gas temperature less than 260 ℃ -300 ℃. After efficient handling , dust content can be controlled within 100mg/m3; b) asphalt fume treatment. Skateboards and magnesia carbon brick are steeped tar and then fired in the kiln , removal of volatile , so product asphalt fumes to pollute the workplace and the surrounding environment.

” clay adsorption ” process used on asphalt fume treatment, which uses clay to absorb asphalt fumes , after incinerated . This process is complicated, high operating costs, and secondary pollution problems, the actual operating results are unsatisfactory.

Some companies take the burning asphalt smoke method , simple process . Now some products use organic binders, emissions of harmful substances during heat treatment. waste gas incineration method has also taken the gas burned in the stove , the burning temperature > 750 ℃, the volume of the combustion heat intensity at around 1300GJ/m3h.

In recent years, using a ” wash oil absorption ” process on the part of the oil facilities. Use wash oil to absorb asphalt fumes . After saturation, it can be used as furnace fuel to reduce costs. It is better to use after production.