2results about How to "Efficient and environmentally friendly" patented technology

The application discloses a double-handle control dust suppression and recovery marble machine, which comprises a marble machine body, a cutting chamber is arranged on one side of the marble machine body, a butt joint plate is arranged at the outer end of the cutting chamber, a driving shaft is arranged in the cutting chamber and the butt joint plate, a cutting blade is arranged outside the driving shaft, a connecting plate is arranged outside the butt joint plate, a dust suction box is arranged outside the connecting plate, a movable frame is arranged at one end of the dust suction box, the movable frame is installed at one end of the connecting plate, and a blocking plate is arranged at the bottom of the dust suction box. Compared with the prior art, the application has the advantages that the operation stability and convenience are improved through the design of the bidirectional handle, the dust suction, filtration and recovery integrated system is integrated, the efficient collection and graded treatment of water mist, dust and chippings in the cutting process are realized, the self-cleaning anti-blocking structure and airflow monitoring function are used to effectively avoid the blockage and guarantee the continuous operation, the whole machine is environmentally friendly, safe and easy to maintain, and the problems of large dust, difficult control and easy blockage of the traditional marble machine are remarkably improved.

The invention discloses a smelting process for roasting gold concentrate in a two-stage fluidized bed furnace, which comprises the following steps: sequentially carrying out first-stage arsenic removal roasting and second-stage desulfurization roasting on the gold concentrate to obtain roasted sand, then carrying out cyanidation leaching on the roasted sand to obtain gold-containing leachate, adsorbing the gold-containing leachate by adopting activated carbon to obtain gold-loaded carbon, and desorbing the gold-loaded carbon to obtain gold-containing pregnant solution. Electrolyzing the pregnant solution to obtain gold mud, and casting the gold mud to obtain a gold ingot; according to the method, efficient utilization of the low-grade arsenic-containing gold concentrate is achieved through segmented temperature control arsenic removal and desulfurization, sulfur acid making cooperation and whole-process recovery rate optimization, and the recovery rate of gold reaches up to 91.6%.