+ Translate

Phos-acid process: convert to hemihydrate and save costs

, : Phos-acid process: convert to hemihydrate and save costs. Fertiliser News 32(12): 51, 53, 55, 57

The hemihydrate and hemidihydrate processes for the production of phosphoric acid are described briefly.

(PDF 0-2 workdays service)

Accession: 001653973

Submit PDF Full Text: Here

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Related references

Benko, L.B., 2001: PHOs thrive in some communities. More providers join PHOs to save costs and improve contracts; total number of PHOs slips. Modern Healthcare 30(50): 20-21

Crozier, B., 1982: Convert to the direct production of high strength, high quality phosphoric acid with Fisons hemihydrate technology. Production of concentrated, clarified, wet process phosphoric acid by the hemihydrate route, which avoids the use of acid evaporation and clarification equipment, is discussed. Recent data from commercial production with 72% BPL and 68% BPL Florid...

Panov, V.K.; Lykov, M.V.; Arkhipova, L.N.; Korshunov, L.I.; Tokmakova, T.V.; Isaeva, L.V.; Kirnasova, O.P., 1983: The distribution of fluorine, silicon and phosphorus in the process of concentrating hemihydrate wet-process phosphoric acid produced from Khibiny apatite concentrate. A study was made of the distribution of fluorine, silicon, and phosphorus during the concentration of wet-process phosphoric acid from 34.9-35.3 to 51.5-51.6% P2O5 by vacuum evaporation. Operation is described and points of maximum loss identified...

Ore, F.; Ellis, J.D.; Moore, J.H., 1981: Hemihydrate type phosphoric acid process. Phosphate rock and phosphoric acid are added to a first reaction vessel which contains a slurry of calcium sulfate hemihydrate, monocalcium phosphate, and phosphoric acid. The slurry is maintained at a negative soluble sulfate concentration based...

Crozier, B., 1987: The performance of Syrian phosphate in the hemihydrate phosphoric acid process. The use of Syrian rock for the production of phosphoric acid by the hemihydrate process is described. Good P2O5 recovery efficiencies and filtration rates were achieved. Problems with foaming caused by the high CO2 content of the rock and with cor...

Blumrich, We, 1972: Developments in phosphoric acid technology and Fisons hemihydrate process. Seminar on Recent Advances in Fertiliser Technology New Delhi: oceedings, 1972 140-148

Caesar, M.B., 1992: Recovery and utilization of gypstack leachate in hemihydrate phosphoric acid process. In wet-process phosphoric acid production, the byproduct calcium sulfate, either in the dihydrate and/or hemihydrate form, is stacked on open ground forming a gypstack. The solid calcium sulfate is pumped as a slurry in pondwater to the top of the...

Ivanov, E.V.; Zinyuk, R.Y.; Pozin, M.E.; Bukseev, V.V., 1982: Test of a hydrocyclone in production of wet-process phosphoric acid by the hemihydrate method. A hydrocyclone was installed above the third section of a four-section extractor in a plant for the production of wet-process phosphoric acid by the hemihydrate method. Feed was by a submersible pump in the fourth section of the extractor. The thi...

Petropavlovskii, I.A.; Kremenetskaya, E.V.; Karmyshov, V.F.; Klassen, P.V.; Spiridonova, I.A., 1988: Dihydrate-hemihydrate method of production of wet-process phosphoric acid from magnesium-containing raw material. The dihydrate-hemihydrate process for the production of wet-process phosphoric acid was studied with application to a typical Kovdor flotation concentrate, which contains 36.6 wt% P2O5, 48.2 wt% CaO, 3.43 wt% MgO, 1.98 wt% F, 0.72 wt% R2O3, with t...

Torocheshnikov, N.S.; Petropavlovskii, I.A.; Thai, B.C.; Lanh, L., 1986: Continuous recrystallization of calcium sulfate dihydrate to the hemihydrate in the phosphoric acid wet process. An examination was made of the aggregation of calcium sulfate hemihydrate crystals in phosphoric acid solution. The crystals were formed by the recrystallization of calcium sulfate dihydrate during the two-stage dihydrate-hemihydrate process for t...