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treatment of phosphate rock

Phosphorite - Wikipedia

2019-10-19  Phosphorite, phosphate rock or rock phosphate is a non-detrital sedimentary rock which contains high amounts of phosphate minerals. The phosphate content of phosphorite (or grade of phosphate rock) varies greatly, from 4%[1] to 20% phosphorus pentoxide (P2O5). Marketed phosphate rock is enriched ("beneficiated") to at least 28%, often more

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Treatment of phosphate rocks with hydrochloric acid

Cited by: 6

Phosphate Rock - an overview ScienceDirect Topics

Phosphate rocks: Phosphorus, an element of phosphate, strengthens roots and helps them to mature early. Table 7.6 shows the rock phosphate analysis which contains 26.7% P 2 O 5.Rock phosphate is recommended in organic farming as a source of phosphorus for plants.

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US3314537A - Treatment of phosphate rock slimes -

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(PDF) Treatment of phosphate rocks with hydrochloric

Habib Shlewit

Production of dicalcium phosphate by treatment of

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Thermal treatment of phosphate rock (Patent)

1986-9-2  @article{osti_5889698, title = {Thermal treatment of phosphate rock}, author = {Mair, A.D.}, abstractNote = {An improved process for double-stage calcining organic matter contaminated phosphatic apatite rock of the mineral class generally known as francolites is described. The improved process results in the effecting of an intermediate phosphate rock calcine in a form eminently suitable for

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Fluidized-bed thermal treatment of phosphate rock:

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Treatment of western phosphate rocks to improve

Author: William Henry Honstead

Physical and thermal treatment of phosphate ores —

Abdel-Zaher Abouzeid

Treatment of phosphate containing rock - Patent -

2000-5-29  A process for improving grinding of phosphate rock comprises providing phosphate-containing rock in a form which contains from 3 to 25 wt% water, transferring the phosphate-containing rock to a grinding apparatus during a transfer stage, and grinding the phosphate-containing rock in grinding apparatus, wherein the process comprises mixing with the phosphate-containing rock during

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Production of dicalcium phosphate by treatment of

Abstract. This presents results oratory experiments to test a new process for manufacture of dicalcium phosphate. The process is based on the nitric acidulation of phosphate rock concentrate, followed by neutralization of the extract liquor with calcium carbonate.

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Water Treatment Phosphate, Water Treatment

Alibaba offers 5,083 water treatment phosphate products. About 56% of these are phosphate, 1% are phosphate fertilizer, and 1% are stabilizers. A wide variety of water treatment phosphate options are availe to you, such as grade, industrial grade, and agriculture grade.

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ground phosphate rock 翻译结果--cnki翻译助手

The defluorination of wet process phosphoric acid and preparation of feed grade calcium hydrophosphate are introduced in detail that conditions are:ground phosphate rock 200 g,compound defluorinating agent 22 g,at 90 ℃~95 ℃ react for 30 min.

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TECHNOLOGY OVERVIEW CHEMICAL STABILIZATION

2015-3-19  ITRC Chemical Stabilization: Phosphate and Biosolids Treatment August 2010 In 1999, a study was conducted to evaluate the effectiveness of biosolids and lime treatment in reducing metals avaiility, increasing pH, and promoting vegetation growth. In 2003, a second

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CN106241764B - Ammonium sulfate from the waste slag

2016-8-23  The present invention relates to the technical field prepared ammonium, especially ammonium phosphate material prepared by the method of treatment of sewage and waste slag ammonium sulfate phosphate anhydrous hydrogen fluoride production

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(PDF) Phosphate Recycling in the Phosphorus Industry

PDF The feasibility of phosphate recycling in the white phosphorus production process is discussed. Several types of materials may be recycled, provided they are dry inorganic materials, low in

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phosphate】什么意思_英语phosphate翻译_音标_读音

磷酸根 - 引用次数:28 Sulfides,carbonate,and phosphate are always present in industrial wastewater,urban sludge,or their treatment processes. Because the trace metals can easily precipitate with sulfides and other anion,they also will not exist in adequate amount

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Treatment of phosphate rock on soil in situ with

1980-11-4  A layer of bare, untreated phosphate rock granules is applied to the soil, and concentrated sulfuric acid is supplied thereto. The sulfuric acid is sufficiently concentrated so as to be containable by cold-rolled carbon steel, and sufficiently viscous to cling to the granules to react therewith

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The effect and mechanism of improved efficiency of

2014-7-23  The effect and mechanism of improved efficiency of physicochemical pro-release treatment for low grade phosphate rock L. Huang, X.-y, Mao*, J. Wang, X. Chen, G.-h, Wang, Z.-w, Liao College of Natural Resources and Environment, South China Agriculture University, Guangzhou, 510642, China *Corresponding author: [email protected]

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World Production of Phosphate Rock

2019-3-22  Phosphate rock production in the U.S. surpasses domestic needs, and the excess is exported to international markets. Domestic 4 Better Crops/Vol. 83 (1999, No. 1) World Production of Phosphate Rock Phosphorus (P) is a vital resource for sustaining world agriculture. Reserves of phosphate rock are identified in many regions of the world. TABLE 1.

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Mechanical activation of the phosphate rock

2009-8-9  The direct application of phosphate rock seems to offer a better alternative in terms of low cost, least energy-intensive and sophistication of processing of the phosphate

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Phosphate minerals - Wikipedia

2019-9-27  Phosphate rock has high concentration of phosphate minerals, most commonly of the apatite group. It is the major resource mined to produce phosphate fertilizers for the agriculture sector. Phosphate is also used in animal feed supplements, preservatives, anti-corrosion agents, cosmetics, fungicides, ceramics, water treatment and metallurgy.

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Treatment of phosphate-containing rock - Ciba

2001-4-10  A process for improving grinding of phosphate rock comprising providing phosphate-containing rock in a form which contains from 3 to 25 wt % water, transferring the phosphate-containing rock to a grinding apparatus during a transfer stage, and grinding the phosphate-containing rock in grinding apparatus, wherein the process comprises mixing with the phosphate-containing rock during

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Treatment of phosphate rock in soil to provide

1976-9-7  Treatment of phosphate rock in soil to provide fertilizer and gypsum Gypsum is a widely-used corrective substance applied to croplands, and the gypsum formed by this treatment reduces the requirement to purchase gypsum as a product separate from the fertilizer. Substantially all of the phosphorus contained in the rock can ultimately be

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INFLUENCE OF THE COMPOSITION OF PHOSPHATE

2016-2-23  Keywords: Phosphate rock, Semi-hydrate phosphogypsum, Insoluble impurities, Water-insoluble phosphates In this a chemical and mineral composition of phosphate rock and phosphogypsum was investigated in order to identify which impurities of phosphate rock prevent natural phosphates from decomposing in full during the production of phosphoric

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Chemical and structural changes of raw phosphate during

2019-10-21  phosphate rock, the factors (size, temperature and time) affecting the increase of P 2O 5 weight % upon heat treatment. Note that phosphate rock with a high level of organic matter can be also processed by thermal route (11). The principal objective of

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(PDF) Treatment of phosphate rocks with hydrochloric

The present technology of phosphate rock treatment suffers from the production of large amounts of impure radioactive Experimental gypsum [13]. For each ton phosphate rocks treated, about 1.5 tons of gypsum is produced containing about Materials 1.48 Bq g-1 [4].

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Phosphate Rock Treatment with Hydrochloric Acid for

The present deals with the treatment of phosphate obtained from a commercial sample of Akashat phosphate ore in hydrochloric acid. The factors studied are effects of the temperature of dissolution, acid concentration, and the time required for

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Modified phosphate rock by γ-poly glutamic acid and its

The pot experiments of rapeseed seedling and the incubation test were used to investigate the modified phosphate rock through γ-poly glutamic acid(γ-PGA) on the growth of rapeseed seedlings and soil properties.Three soils,namely red soil,yellow cinnamon soil

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