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8123116 |
Fuel dispenser with intelligent switch
A system for providing dispensing of fuel for refuelling vehicles, comprising a control unit and at least two switches. Each of said switches is connected to the control unit and comprises a...
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7947104 |
Process for treating sludge and manufacturing bioorganically-augmented high nitrogen-containing inorganic fertilizer
The invention describes a new method for treating sludge, which can result in the production of high nitrogen organically-augmented inorganic fertilizer that incorporates municipal sludges or...
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7452398 |
Phosphate and potash(PK)-containing compound fertilizer
The primary object of the invention is to provide a method of producing novel phosphate and potash (PK) containing compound fertilizers in the form of powders showing good handle-ability by which...
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6346131 |
Fertilizer compositions for administering phosphates to plants
A plant fertilizer composition that includes an acid whereby said acid may react with, chelate, or block any metal ions in the soil in which the plants grow during administration of the fertilizer....
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6231767 |
Treatment of phosphatic wastes
A process for treating thickened phosphatic clay suspensions, waste clay and phosphogypsum produced in the processing of phosphate ore by water beneficiation and chemical processing, the thickened...
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5308372 |
Vegetable oil processing to obtain nutrient by-products
A method of processing vegetable oil in which non-toxic reagents are used, so that a waste stream is evolved suitable for use as a nutrient source and wherein the non-toxic reagents include...
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5275639 |
Recovery of phosphates from elemental phosphorus bearing wastes
A process for oxidizing aqueous elemental phosphorus containing residues (sludges) to produce orthophosphate containing slurries suitable for subsequent reaction with ammonia to produce nitrogen-...
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5211735 |
Process for preparing phosphated or nitrophosphated fertilizers through solubilization of phosphate rock
The invention aims at a process for preparing phosphated or nitrophosphated fertilizers through reaction of phosphate rock in aqueous pulp, with sulfuric and/or phosphoric acids, with addition, or...
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4939165 |
Photoactive bithienyl pesticides
Bithienyl compounds of the following structural formula are phototoxic insecticides and acaricides: ##STR1## wherein R1 is selected from hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy,...
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4836843 |
Fertilizer process
A method of fertilizing soil comprising the steps of treating soapstock with an acid containing phosphorus compounds, separating the acid oil from the acid water, and using the resulting acid water...
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4834787 |
Phosphate rock utilization
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...
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4710364 |
Continuous recovery of sulfur oxide from flue gas
A process for removing sulfur dioxide from flue gas is disclosed. After passing through a precipitator to remove particulate material, the flue gas is conducted continuously through a fixed bed...
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4650682 |
Acidifier-ammoniator
Apparatus and process for chemically treating particulate solids material in free flowing condition with fluid reactants in a drum reactor having an acidifying chamber in which acid is introduced...
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4594090 |
High nutrient content fertilizers
A method of making fertilizer comprising the steps of mixing an aqueous solution of sulfuric acid with diammonium phosphate in a weight ratio of diammonium phosphate to sulfuric acid from about 3...
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4568374 |
Process for the preparation of fertilizers by the partial solubilization of phosphate rocks
The object of the invention comprises a process for the preparation of fertilizers by solubilizing phosphate rocks containing impurities, which make processing thereof difficult.The process is a...
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4522638 |
Method and apparatus for regulating the NH3 content in scrubbing liquid used in a gas scrubbing process
A process for regulating the NH3 content in an organic liquid that acts as a physical scrubbing agent and is used in a procedure for absorbing sour gases from gaseous mixtures. To ensure...
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4462972 |
Method for producing fertilizer-grade phosphoric acid
A process for producing fertilizer-grade phosphoric acid is disclosed. In the process, a rock slurry is produced from a predetermined quantity of phosphate rock and a predetermined quantity of pond...
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4397675 |
Method of producing urea-sulfuric acid reaction products
Stable, urea-sulfuric acid reaction products of predetermined composition containing mono- and/or diurea sulfates and less than 35 weight percent water are produced from concentrated, urea-sulfuric...
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4388101 |
Non-pressure nitrogen carrier fertilizer solutions and dispersions and process of manufacture
A "non-pressure" liquid fertilizer containing nitrogen and sulfur can be prepared by a process comprising (a) mixing sulfuric acid in water, (b) dissolving urea into the resulting solution, and (c)...
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4336053 |
Fertilizer solutions stabilized with inorganic acids
A stable liquid fertilizer solution containing nitrogen, phosphorus, iron and optionally sulfur is prepared by mixing a water-soluble iron compound with ammonium polyphosphate and water to produce...
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T101901 |
Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid
A process for the production of fluid fertilizers (suspensions and/or solution type) made from merchant-grade phosphoric acid (50-58 percent P2 O5), sulfuric acid, liquid anhydrous ammonia, and...
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4321077 |
Method of preparation of multicomponent fertilizers
The subject of the invention is the method of preparation of multicomponent fertilizers based upon the decomposition process of mineral phosphate material by ammonium sulphate and sulphuric acid....
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4308049 |
Process for the absorption of ammonia in acid solutions or slurries
A process is disclosed for the absorption of gaseous or liquid ammonia in acid solutions or slurries, including an ammonia absorption zone separated from a water vapor generation zone disposed at a...
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4252553 |
Process for production of fertilizers
A process for the production of fertilizer by reacting sulfur oxide containing gas and water in a multiple state reactor to form sulfur containing acid and reacting the sulfur containing acid with...
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4231780 |
Treatment of phosphate rock on soil in situ with sulfuric acid
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...
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4177053 |
Method for the production of phosphoric acid with high contents of fertilizer-nutrients
Phosphoric acid with a high fertilizer-nutrient content is produced by decomposing phosphate rock with nitric acid followed by precipitation of calcium ions with sulfate. The steps of the process...
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4175944 |
Removal of fluorine during production of fertilizer
The invention provides a novel process for the removal of fluorine during the production of fertilizer by precipitating the ion during the ammoniation step and recovering same by pyrolysis.To...
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4077794 |
Method for the manufacture of soil modifiers from waste materials of the manufacture of titanium dioxide
A soil modifier comprising from 80 to 95% by weight of a mixture of ferric oxide and ferric sulphate in an oxide/sulphate weight ratio of from 0.25:1 to 1:1, is prepared by calcining at 500°-600° C...
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4073635 |
Process for producing a slurry suitable for the manufacture of a mixed fertilizer containing nitrogen plus phosphorus
Crude phosphate is leached with nitric acid to produce an acid slurry, which is thereafter neutralized with ammonia in two successive stages while simultaneously cooling it and adding acid, part of...
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RE29458 |
Potassium phosphate manufacture
Fertilizer materials, especially potassium dihydrogen phosphate, are produced by the reaction of phosphate rock or a solubilized form thereof, such as mono calcium phosphate, dicalcium phosphate,...
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RE29149 |
Production of ammonium phosphates and product thereof
Ammonium phosphate solutions free of precipitates are prepared from wet-process phosphoric acid containing incidental metallic impurities such as iron, aluminum and magnesium by concentration of...
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4007030 |
Process for the simultaneous manufacture of phosphoric acid or the salts thereof and a complex multi-component mineral fertilizer
In the process according to the invention, raw phosphate rock is decomposed with an aqueous solution of sulfuric acid and ammonium sulfate recycled from the conversion step of phosphogypsum into...
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3979199 |
Treatment of phosphate rock in soil to provide fertilizer and gypsum
Pulverized phosphate rock is spread onto or mixed into soil which is to be fertilized. The soil is then treated with a solution of sulfurous acid, usually the output of a device which burns sulfur...
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3962329 |
Manufacture of granular isobutylidenediurea
The preparation of isobutylidenediurea from isobutyraldehyde and urea, the particle size of the product being controlled by alternate use of sulfuric acid and phosphoric acid.
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3947262 |
Method of producing phosphorus-containing fertilizers
A method of producing phosphorus-containing fertilizers, wherein the phosphate raw stock is treated with a mineral acid selected from the group, consisting of phosphoric acid, sulphuric acid and a...
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3871859 |
Process of treating electrolytic zinc refining jarosite residues
The jarosite residues produced in the precipitation of complex basic iron sulphate from solutions of iron and zinc and other metal sulphates in the presence of ammonium, sodium and/or potassium...
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3642439 |
METHOD OF SEPARATING MAGNESIUM FROM WET-PROCESS PHOSPHORIC ACID
A method of separating magnesium from wet-process phosphoric acid characterized in that the magnesium is separated as a readily filterable fluoride-phosphate complex compound containing magnesium...
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3544301 |
PROCESS FOR CONVERTING PHOSPHATE ROCK TO FERTILIZER
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3525602 |
PROCESS FOR PRODUCING SALT SUSPENSION FERTILIZERS
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3507641 |
PREPARATION OF SLURRY FERTILIZER BY ACID TREATMENT OF PHOSPHATE ROCK AND AMMONIATION
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3758287 |
PROCESS OF TREATING ORGANIC WASTE
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3697246 |
POTASSIUM PHOSPHATE MANUFACTURE
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3817738 |
REMOVAL OF ODORS FROM IMPURE SULFURIC ACID
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3467515 |
PROCESS FOR THE PREPARATION OF "SINGLE" AND TRIPLE SUPERPHOSPHATE FERTILIZERS USING ALKYLATION SPENT ACID SLUDGES
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3457061 |
UTILIZATION OF PHOSPHORIC ACID SLUDGE
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3446612 |
BASIC FERTILIZERS CONTAINING DERIVATIVES OF AN OLIVINE MINERAL
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3436205 |
PROCESS FOR PRODUCING GRANULAR NITRIC PHOSPHATE FERTILIZER WITH HIGH PHOSPHATE AVAILABILITY
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3433617 |
PROCESS FOR PREPARING AN AMMONIATED PHOSPHATE SLURRY FERTILIZER
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3431087 |
METHOD FOR THE PREPARATION OF HIGH PURITY NITRONIUM SALTS
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3431097 |
METHOD OF PREVENTING REVERSION IN THE PREPARATION OF AMMONIUM PHOSPHATES BY THE ADDITION OF VERMICULITE
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