The “Entry Requirements for Phosphate Mining Industry in Guizhou Province†stipulates that the scale of the design and production of new phosphate mines in the mining scale of Kaiyang Yangshui Mining Area, Jifu Mining Area and Zhijin Mine must be more than 500,000 tons/year. The remaining areas must reach 100,000 tons/year or more. “Gold Phosphorus Industry Access Requirements in Guizhou Province†requires that the capacity of a single yellow phosphorus production plant with a single-stage phosphorus furnace must reach 20,000 KVA (kilovolt-ampere) or more, and the production capacity should be 10,000 tons/year or more. Simultaneously, the downstream production equipment must be constructed; It is necessary to construct facilities for comprehensive utilization of resources such as yellow phosphorus tail gas and slag, and the waste utilization rate is greater than 60%. The “provisional access conditions of superphosphate industry in Guizhou Province†stipulates that the actual volume production capacity of new single set of superphosphate production facilities must reach 200,000 tons/year; the current single-set production capacity of superphosphate is 80,000 tons/year. The following devices shall be capable of expanding and transforming to 80,000 tons/year or more; and eliminating the single set of superphosphate production equipment of 80,000 tons or less before the end of June 2008; the new superphosphate production device must adopt the automatic control technology of acid and mineral feeds. Automatic adjustment of acid amount, concentration and ore content; tons of superphosphate (expanded) phosphate ore (subscript) consumption shall not be greater than 690 kg/ton, and sulfuric acid (100%) shall not be greater than 380 kg/ton.
Submerged arc welding plate is one of the most widely used mechanical welding methods in various industrial sectors, especially in shipbuilding, power generation equipment, boiler pressure vessels, large pipelines, rolling stock, heavy machinery, bridges, and oil refining and chemical equipment production. Technology has played a positive role in promoting the development of the welding structure manufacturing industry.
Its working principle is the work piece is placed on the work piece carrier; welding arm with open arc welding torches on gantry frame move horizontally, up and down; so that the welding nozzle head aligning on the welding seam, and then by the gantry shelf moving on the rail as straight line, weld automatically. This machine can weld four welding seam at the same time.
Automatic ovelaying welding hardfacing machine,plate welding machine,open arc Open Arc Welding Plate Overlay Welding Machine
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