SULFURIC ACID RESISTANT STEEL

Brand	Owner	Address	Description
S-TEN	SHIN NIPPON SEITETSU KABUSHIKI KAISHA	6-3, Ohtemachi 2-chome, Chiyoda-ku Tokyo Japan	Sulfuric acid resistant steel; metal welding rods; steel sheets; steel pipes; building boards of metal; stop collars of metal; stop of metal; strap-hinges of metal; brackets of metal for buildings; framework of metal for buildings; reinforcing materials of metal for buildings; fittings of metal for buildings; buildings of metal; hardware of metal; joists of metal; linings of metal; nuts of metal; pillars of metal for buildings; poles of metal; posts of metal; props of metal; sheet piles of metal; sheets and plates of metal; trellis of metal; tubes of metal;SULFURIC-TEN;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

The present invention relates to a method of preparing wet process phosphoric acid, which comprises: dividing raw materials which contain phosphate rock slurry and sulfuric acid into two parts, and then feeding these two parts into two reactors separately. In the first reactor, feeding 70-90 wt. % of the total amount of the slurry and sulfuric acid, in which the ratio of phosphate rock slurry to sulfuric acid to recycled phosphoric acid is set to be 1:0.6~0.8:1.0~2.5. 10~30% of the reaction solution directly flows into conversion cell, participating in the conversion reaction of dihydrate gypsum. Thus resulted phosphoric acid concentration is 33~39 wt. %. The recovery efficiency of P2O5 is 99% or more. When putting coke powders in the conversion solution as filter aid, the filtration efficiency can be improved by 10~30%, and in so produced hemihydrate gypsum, P2O5 is 0.05~0.2%, water of hydration is 4~8%. The product can be used for producing sulfuric acid and cement without baking dry.