4252results about "Solid/semi-solid fertilisers" patented technology

A seed for enhancing the extended delivery of nitrogen needed for plant development and growth, the seed having a slow release nitrogen coating of a particulate UF polymer adhered to the seed with an adhesive binder.

This invention discloses systems and methods for conversion of manure to novel fertilizer and / or soil builder products useful as input for organic farming operations. The equipment systems comprise a gas turbine generator unit (preferred heat source), a dryer vessel and a processing unit, wherein the connection between the gas turbine and the dryer vessel directs substantially all the gas turbine exhaust into the dryer vessel and substantially precludes the introduction of air into the dryer vessel. The dryer vessel receives the manure for contact with the turbine exhaust gases to convert the manure to a dry material, which is passed to the processing unit where it is formed into granules, pellets or other desired form for the final dry fertilizer product. The method comprises drying, heating and converting the manure to form novel self binding fertilizer and soil builder type products for organic farming and other uses.

This invention discloses advanced means for the formulation and preparation of solid-chemical compositions which provide sources of water-soluble nutrients, electron acceptors and other agents for agriculture and waste-treatment, in particular, the bioremediation of contaminated environmental media. The disclosed formulations and means of production of the slow-release solid-chemical compositions of the present invention utilize a novel and economical "biphasic" chemical-system technology which involves a combination of a first "nutrient" component (1) which comprises water-soluble nutrients and other biologically utilizable substances with a second component (2) which comprises an inorganic geochemical-binder system. The simplest embodiment of the geochemical-binder system comprises one or more salts of phosphoric acid. In the preferred embodiments of the present invention intended for the slow-release of the ingredients contained in the "nutrient" component (1), the geochemical-binder system of component (2) comprises a combination of one or more salts of phosphoric acid with a inorganic binder matrix preferably containing a mixture of low-solubility carbonates, carbonate minerals, phosphates and phosphate minerals. The different embodiments of the geochemical-binder system of this invention allows a wide variation of formulations of the nutrient component (1) to be prepared in both conventional and slow-release forms using an improved high-shear granulation process whereby the dangerous chemicals typically used in the granulation process are largely or completely replaced with water. The present invention discloses means by which such compositions can be economically prepared in large quantities so as to meet the specific needs of different sectors of the agricultural / agribusiness and phytoremediation / bioremediation markets. The disclosed solid-chemical compositions of the present invention provide improved, cost-effective means for slowing and controlling the release-rate profiles of water-soluble nutrients, such as nitrogen- and phosphorus-rich compounds, and improved means for enhanced and / or time-targeted nutrient uptake by plants and microorganisms. The present invention also provides improved means for the reduction of nutrient run-off from agricultural areas into surface waters and means of preventing or minimizing nutrient-contamination of ground-water aquifers.

The invention discloses a method for sorting and comprehensively using urban mixed garbage. The method comprises the following steps: 1) allowing the urban mixed garbage to enter a feed bin through a feeding hole, discharging, and introducing into crushing and bag breaking equipment; 2) breaking garbage bags and crushing block garbage by using the crushing and bag breaking equipment; 3) feeding the garbage subjected to crushing and bag breaking into a two-stage rotary screen, screening out dust of which the grain size is less than 3mm, and picking out strip substances; and 4) feeding the mixed garbage into a vibration screen, separating inorganic cakes, large-sheet plastics and paper from an oversize material by using a heavy winnowing machine, and winnowing heavy substances, light substances and intermediate substances from an undersized material in a double-wind chamber multifunctional winnowing machine. Sorting equipment is effectively combined, so that the mixed garbage is efficiently sorted and recycled; and the sorted paper and textiles, plastics and kitchen organics are respectively used for preparing garbage derived fuel, plastic wood and fertilizers.

A method for treating a seedling by dipping the roots of the seedling into a composition containing a slow release, particulate urea-formaldehyde polymer, which is useful as a fertilizer for enhancing the extended delivery of nitrogen needed for plant development and growth and to the composition useful as the root dip, or as a soil drench.

A water-dispersible particle for delivery of nitrogen to a plant is disclosed. The water-dispersible particle also delivers an active ingredient such as a plant hormone to a desirable plant or a pesticide or herbicide to an undesirable organism. Methods for making and using the water-dispersible particle are described.

A slow release, particulate urea-formaldehyde polymer useful as a fertilizer for enhancing the extended delivery of nitrogen needed for plant development and growth and a granular fertilizer made with the particulate urea-formaldehyde polymer.

This invention discloses systems and methods for conversion of manure to novel fertilizer and / or soil builder products useful as input for organic farming operations. The equipment systems comprise a gas turbine generator unit (preferred heat source), a dryer vessel and a processing unit, wherein the connection between the gas turbine and the dryer vessel directs substantially all the gas turbine exhaust into the dryer vessel and substantially precludes the introduction of air into the dryer vessel. The dryer vessel receives the manure for contact with the turbine exhaust gases to convert the manure to a dry material, which is passed to the processing unit where it is formed into granules, pellets or other desired form for the final dry fertilizer product. The method comprises drying, heating and converting the manure to form novel self binding fertilizer and soil builder type products for organic farming and other uses.

The invention is directed to a process for enhancing the plant nutrient value of relatively low analysis organic waste material (e.g. sewage sludge) involves treating the waste material with an acid and base in a pipe-cross reactor or tubular to form a melt; spraying the melt onto a recycling bed of fines in a granulator and flashing off the water contained in the melt as steam; rolling the melt onto recycled fine particles in a granulator to form granulated particles; and drying these granulated particles to form an enhanced plant nutrient value composition (e.g. a fertilizer or soil conditioner having a greater NPK value than the original relatively low analysis organic waste material). The process further includes drawing off the fumes from the granulator, passing them through a dryer with the granulated particles, and subsequently oxidizing the fumes to eliminate volatile organic compounds and / or gaseous hydrocarbon pollutants be converting such into carbon dioxide and water vapor.

The invention provides for methods, devices, and systems for pyrolyzing biomass. A pyrolysis unit can be used for the pyrolysis of biomass to form gas, liquid, and solid products. The biomass materials can be selected such that an enhanced biochar is formed after pyrolysis. The biomass can be pyrolyzed under specified conditions such that a selected biochar core is formed. The pyrolysis process can form a stable biochar core that is inert and / or resistant to degradation. The biochar or biochar core can be functionalized to form a functionalized biochar or functionalized biochar core. Functionalization can include post-pyrolysis treatments such as supplementation with microbes or physical transformations including annealing and / or activation.

A process for making homogeneous granules of slow-release fertilizer to deliver high doses of slow-release nitrogen in pellets that disperse or fall apart when contacted by moisture. The method includes mixing particles of slow-release nitrogen with particles of a potassium source and particles of a phosphorus source, to make a homogeneous blend of the particles. Then, the blended particles are moistened with water or an aqueous solution of urea to moisten the homogeneous blend. After moistening, the blended particles are contacted with an aqueous suspension of urea-formaldehyde resin to bind the particles into homogeneous granules. The aqueous suspension of urea formaldehyde resin preferably has a urea:formaldehyde ratio of about 1:1.

The invention discloses a straw carbon matrix biological organic fertilizer and a preparing method. China is the largest fertilizer importing country and the largest nitrogenous fertilizer producing country in the world, and has 7% of arable land on earth, but usage amount of fertilizers and pesticides is 35% of global total amount, and yearly needed amount of fertilizers are 150,000,000 tons. The utilization ratio of fertilizers in China is only 35%-45%, the balance is fixed or leached by soil, causing environmental problems of water body pollution, lake eutrophication and the like. The straw carbon matrix biological organic fertilizer is prepared from, by weight, 60-70 parts of a compost raw material, 25-30 parts of straw carbon of a microbial agent with an adsorption function, 2-5 parts of zeolite powder, 2-5 parts of bentonite and 0.5-1 part of a binder. The straw carbon matrix biological organic fertilizer is applied to the field of bio-fertilizers and green planting.

A method for creating a particle from a powder according to one embodiment includes applying a droplet of a liquid to a bed of powder, wherein a particle is formed at about a point of contact of the droplet with the bed. A composite particle according to one embodiment includes a liquid-absorbing material and a liquid-induced binding agent substantially homogeneously dispersed in the particle. A composite particle according to yet another embodiment includes a liquid-absorbing material and a byproduct of a liquid-induced gas forming agent substantially homogeneously dispersed in the particle. A composite particle suitable for use as an animal litter according to an embodiment includes a liquid-absorbing material, where the particle has at least one of the following properties: hollow, cupped, and generally bagel shaped. A composite particle in yet another embodiment includes a material formed in a shape substantially defined by a droplet of liquid.