Raw Material Mill Become the Key Equipment of Cement Grinding

Raw material mill is the equipment used to grind raw materials into 'rawmix' during the manufacture of cement. Rawmix is then fed to a cement kiln, which transforms it into clinker, which is then ground to make cement in the cement mill. The rawmilling stage of the process effectively defines the chemistry (and therefore physical properties) of the finished cement, and has a large effect upon the efficiency of the whole.

The raw material mill has the advantages of low energy consumption, high grinding efficiency, strong drying capacity, simple process and large production capacity, which has already become the key equipment of cement grinding system. With an installed power of 3800---4200kw, the diameter of CRM5304 vertical mill is 5300 mm. It can be used in the raw material preparation system of the 5000-6000 t/d clinker production lines. CRM5304raw material mill has completed batch charging and commenced operation since September 2010. The preparation system operates easily and stably. The vertical and horizontal vibration are less than 1.5mm/s. The contractor speaks highly of its performance.

Improved framework conditions, including expected CO2 compensation in Germany, are giving relief to this efficient smelter. When the expected CO2 compensation is in place, we aim to resume some of the curtailed production, increasing production to around 150,000 tonnes per year during the first half of 2013. Since March 2009, Hongxing has operated at a lower production level of 50,000 tonnes per year, compared to a total production capacity at around 230,000 tonnes, in response to the weak global demand and prices for aluminium.

The smelter was integrated into Rolled Products business area. The integration has realized positive synergy-effects, and identified further potential. Ramping up production of primary metal will realize these positive system effects for rolled products operations in the Hongxing-Grevenbroich aluminium cluster. It will replace costly...