The soot in the crystallization tank and the bag filter is characterized by a high arsenic content (about 63 to 49% ) and requires special handling. About 16% of the Au is transferred to the dust of the dry scrubber and the electrostatic precipitator. These soots are almost identical in terms of their chemical composition. Analysis of the forms of arsenic in these soots indicates that approximately 92% of the arsenic is arsenic trioxide. According to previous tests, the possibility of simultaneously treating the soot in the precipitator and the electrostatic precipitator with the pre-granulated raw material was verified. The above-mentioned soot was placed in a disc granulator having a diameter of 500 mm to form pellets. Disk speed of 14-16 revolutions / minute, angle of 52 ~ 55 °, only need to add water when granulated without adding a binder. The particle size selected according to the conditions which can ensure the liquid layer of the material in the furnace is 100% - 5 + 1.0 mm. The coarse particles have a moisture content of 10 to 12% and a strength of -1.1 to 1.5 kg per particle. The proportion of the dust in the dust collector and the electrostatic precipitator should be determined according to the weight of various soot produced during the roasting process. The mixed soot is then sent to a granulator for granulation. Both the roasting of concentrates and the return of soot are based on previously established systems. Stage I fired per unit of processing capacity of 90,000 tons per day and night / square meter. Before the material balance is established, the amount of the returned soot mixture should be 19.5% of the concentrate weight , which is the value of the calcining unit's reduced ability to treat the original concentrate. The roasting work is characterized by stable temperature and air conditions; the quality of the slag is very good. Second soot obtained leaner containing gold, about 5 to 3%. The yield of the slag is increased to 59-62 % of the concentrate weight . The results of the semi-industrial test show that the entire dust removal system including the dust collector, electrostatic precipitator, crystallization tank and bag filter can ensure the dust removal rate of the gas reaches 99.9% (see Figure 6 ). In the two-stage roasting method Dala Song beneficiation plant is not only practiced by: improved technology offers the possibility of economic indicators, but it is also possible to achieve local output of precious metals. MORGAN series steel rolling guide is a kind of equipment used in the steel rolling process, it helps to guide and control the rolling direction and position of steel in the rolling mill. This equipment usually consists of a set of rolling guide wheels that can be adjusted as needed to ensure the correct position and orientation of the steel in the rolling mill. Morgan Series Rolling Guide,Cast Steel Guide Plate Non-Standard Customization,Various Series Of Rolling Equipment Guides,Steel Rolling Equipment Rolling Guide Accessories JINGJIANG EASTSUN METALLURGICAL MECHANICS CO.,LTD , https://www.jesguide.com
MORGAN series rolled steel rolling guides have the following features and advantages:
1. High precision: The guide wheel adopts high-precision bearings and transmission devices to ensure the smooth and accurate movement of the guide wheel, thereby improving the rolling accuracy of steel.
2. Wear-resistant and durable: The surface of the guide wheel has been specially treated, which has good wear-resistant performance, and can be used for a long time without damage during high-speed rolling.
3. Flexible adjustment: The guide wheel can be adjusted according to different rolling requirements, including adjusting the position, angle and spacing of the guide wheel to suit steel products of different sizes and shapes.
4. High efficiency: The design and movement of the guide wheel can minimize the sliding and deflection of the steel, and improve the rolling efficiency and output.
5. Safe and reliable: The guide wheel is equipped with a safety protection device, which can prevent the steel from falling off the guide wheel or the guide wheel fails, ensuring the safety of operators and equipment.
In a word, MORGAN series steel rolling guide is a key equipment, which can effectively guide and control the rolling of steel in the rolling mill, improve rolling precision and efficiency, and ensure the quality and safety of steel.