phosphate rock patents

Apatite | Ca5FO12P3 PubChem

Phosphate rock minerals are the only significant global resources of phosphorus. The United States is the world's leading producer and consumer of phosphate rock, which is used to manufacture phosphate fertilizers and industrial products.

World Reserves of Phosphate Rock… a Dynamic and …

Phosphate rock is an imprecise term that describes naturally occurring geologic materials (minerals) ... back to the mid1800s when the fi rst patents were granted for ... World Reserves of Phosphate Rock… a Dynamic and Unfolding Story Figure 1. World phosphate rock resources (Source: IFDC). Table 1.. Early progression

phosphate flotation us3482688

Nov 20, 2018· United States Patent 3,482,688 PHOSPHATE FLOTATION PROCESS process of the invention, the phosphate rock to be UNITED STATES PATENTS 5 9/1950 . Contact Us; Froth flotation . Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.

preparation of dicalcium phosphate from rock phosphate and ...

patents of preparation of dcp from rock phosphate . A process is described for highly efficient recovery of phosphate values from a wide range of phosphate rock including low grade phosphate rock material by leaching with a dilute sulfuric acid and precipitating phosphate values as dicalcium phosphate. Contact Supplier

World Reserves of Phosphate Rock Dynamic, Unfolding ...

World Reserves of Phosphate Rock Dynamic, Unfolding Story ... and fuel to support a growing world population. Most modern P fertilizer is made from phosphate rock (PR), a nonrenewable natural resource. ... The origin of the modern P fertilizer industry can be traced back to the mid1800s when the first patents were granted for treating ...

Phosphate rock utilization Patent Europe PMC

A process providing solubilization of phosphate rock by contacting the rock with sulfurous acid in the presence of an oxidizing agent selected from the group consisting of hydrogen peroxide and of sulfurous acid in combination with a substoichiometric amount of hydrogen peroxide significantly enhances the solubilization of phosphate rock.

Phosphate AIMR 2013 Australian Mines Atlas

Phosphate rock is the main source of phosphorous which is essential to all forms of life. It is a key component of DNA, it is used in the control of energy transfer and storage at the cellular level as well as playing an important role in metabolic processes.

patent of dicalcium phosphate from rock phosphate ...

Sep 10, 2015· Home / patent of dicalcium phosphate from rock phosphate . patent of dicalcium phosphate from rock phosphate. Accord Phosphate, Accord Phosphate Suppliers and Manufacturers . Accord Phosphate, Wholesale Various High Quality Accord Phosphate Products . MTM Continental trapezoid milling machine, rock phosphate grinding mill.

and floatation method in phosphate rock

US2156245A Flotation of phosphate rock Google Patents. A method of floating phosphate rock which comprises classifying the rock into at least two size ranges between 20 and 200 mesh, at least one sizing cutbeing in the range between about 48 mesh and mesh and subjectingeach range separately to …

patents on phosphate rock benefication

patents on phosphate rock benefication XSM is a leading global manufacturer of crushing and milling equipment (patents on phosphate rock benefication),XSM also supply . Patent US4083929 Beneficiation of phosphate rock .

Using Rock Phosphate For Gardens What Does Rock ...

Rock phosphate, or phosphorite, is mined from clay deposits that contain phosphorus and is used to make organic phosphate fertilizers that many gardeners utilize. In the past, rock phosphate was used alone as a fertilizer, but due to a lack in supply, as well as low concentration, most applied ...

New patent for phosphorus better for environment | Morning ...

The patent is called, “Conversion of LowGrade Phosphate Rock to Produce SlowRelease Fertilizer.” He estimates the newly developed products will cost 30 to 50 percent less in the commercial development phase. “Phosphorous used in traditional fertilizers is produced by dissolving phosphate rock with sulfuric acid,” said He.

patent of dicalcium phosphate from rock phosphate

patent of dicalcium phosphate from rock phosphate patent of dicalcium phosphate from rock phosphate Sandard Two patented process option developed by , A method is disclosed for improving the recovery of a conventional single or double stage flotation process for the benefication of phosphate ore The method includ..

patent of dicalcium phosphate from rock phosphate

patent of dicalcium phosphate from rock phosphate patent of dicalcium phosphate from rock phosphate Sandard Two patented process option developed by, A method is disclosed for improving the recovery of a conventional single or double stage flotation process for the benefication of phosphate ore The method includ..

Phosphate Engineering and Construction Company, Patent ...

Patent Buddy is the world's most extensive database and networking website for patent attorneys, agents and inventors helping inventors like Phosphate Engineering and Construction Company showcase inventions and connect to patent attorneys, patent agents, law firms, corporations, universities, and government agencies in the United States

process of calcination of phosphate rock | Solution for ...

The use of phosphate rock for direct … US Patent 4,017,585. Fluid bed calcination process – Fluid bed calcination process Abstract. Phosphate rock is calcined under conditions calculated to completely oxidize the carbon and sulfur in the rock. ... Posts Related to process of calcination of phosphate rock. calcination and ...

US Patent 4,636,369. Essentially complete recovery of ...

At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. ... thorium and rare earth values contained in a phosphate rock having a relatively low aluminum and iron content, during the wetprocess preparation of phosphoric acid therefrom, comprising ...

Thermal treatment of phosphate rock (Patent) |

An improved process for doublestage 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 the subsequent ...

Phosphate flotation W. R. Grace Co. Free Patents Online

Mar 22, 1983· Use of reverse flotation for phosphate rock ore treatment, ... United States Patent 4377472 . Abstract: Use of reverse flotation for phosphate rock ore treatment, wherein starch is added first to depress phosphate rock particles, followed by addition of cationic reagent, , amine to float the silica. ... These figures compare with ...

Patents on Phosphate processing bone and rock phosphate ...

Phosphate fertilizer and supplements Some History ... "Process of manufacturing trisodium phosphate", US Patent 744,128; filed Jan. 21, 1903; pat. Nov. 17, 1903 ... In the volatilization method phosphate rock is smelted in an electric furnace with a mixture of sand and coke and at such a temperature that the phosphorus is evolved either in the ...

patents on phosphate rock benefication

patents on phosphate rock benefication XSM is a leading global manufacturer of crushing and milling equipment (patents on phosphate rock benefication),XSM also supply, Get More Info method for beneficiation of phosphate rock, Chat; Ore Beneficiation Arabia noworriin.

SOUTH CAROLINA LAND PHOSPHATES IN THE LATE …

SOUTH CAROLINA LAND PHOSPHATES IN THE LATE NINETEENTH AND EARLY TWENTIETH CENTURIES: ... mine phosphate rock. In 1840 Justus von Liebig, a German scientist, made the first clear, intelligent ... 1842 he had obtained a patent on his process and the first “superphosphate” was

US4777026A

The process of calcining any naturally occurring phosphate rock with alkali metal carbonates or other alkali metal salts as revealed in my Australian patent application No. 28507/84. In one form of the invention trisodium orthophosphate is converted to di or monosodium orthophosphate by …

patent of dicalcium phosphate from rock phosphate

patent of dicalcium phosphate from rock phosphate patent of dicalcium phosphate from rock phosphate. Di calcium phosphate by direct acidulation of phosphate rock. phosphate rock to the filtrate and final separation of di calcium phos phates . In laboratory .... a …

Treatment of phosphate containing rock Patent Europe PMC

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