47 results about "Leonardite" patented technology

The present invention relates to a humic acid composite fertilizer and its production method. Its composition is composed of (wt%) 30-70% of leonardite containing 50-75% of human acid, 10-40% of urea, 3-15% of phosphoammonium, 0-30% of potassium chloride, 0-30% of potassium sulfate, 0-10% of potassium hydroxide, 0-12% of potassium carbojnate and 0-3% of trace element. Its production method includes the following steps: pulverizing leonardite, making activating agent, activating leonardite, pulverizing raw materials, mixing them uniformly so as to obtain the invented humic acid composite powerfertilizer product, granulating to obtain granular fertilizer product which can improve crop quantity, reduce nitrate content of agricultural product, raise saccharide content and vitamin content andimprove soil.

Described herein, in the preferred embodiment, is a leonardite-based polyurethane resin binder that may be used, among other applications, as a binder in combination with foundry aggregate, e.g., sand, for molding or casting metal parts. The binders described herein comprise a humic substance, preferably leonardite, combined with a polymerizable polyol, an isocyanate, and a polymerization catalyst to make a polyurethane resin binder in situ in a foundry aggregate, such as sand. The lignite is mixed with the polymerizable polyol, thickening and dispersing agents as additives to improve the suspension quality and binder performance of the lignite-containing part of the binder components.

Described herein, in a preferred embodiment, is a leonardite-based polyurethane resin binder that may be used, among other applications, as a binder in combination with foundry aggregate, e.g., sand, for molding or casting metal parts. The binders described herein comprise a humic substance, preferably leonardite, first mixed with a foundry aggregate and then the humic-aggregate mixture is combined with a polymerizable polyol, an isocyanate, and a polymerization catalyst to make a polyurethane resin binder in situ in a foundry aggregate, such as sand. The lignite is added as a solid to the foundry aggregate, and improves the binder performance of the lignite-containing part of the binder components.

Provided is a process for producing isolated graphene sheets from a supply of coke or coal powder containing therein domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers. The process comprises: (a) subjecting the supply of coke or coal powder to a supercritical fluid at a first temperature and a first pressure for a first period of time in a pressure vessel and then (b) rapidly depressurizing the supercritical fluid at a fluid release rate sufficient for effecting exfoliation and separation of the coke or coal powder to produce isolated graphene sheets, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof.

A method of producing graphene sheets from coke or coal powder, comprising: (a) forming an intercalated coke or coal compound by electrochemical intercalation conducted in an intercalation reactor, which contains (i) a liquid solution electrolyte comprising an intercalating agent; (ii) a working electrode that contains the powder in ionic contact with the liquid electrolyte, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, lignite coal, or natural coal mineral powder; and (iii) a counter electrode in ionic contact with the electrolyte, and wherein a current is imposed upon the working electrode and the counter electrode for effecting electrochemical intercalation of the intercalating agent into the powder; and (b) exfoliating and separating graphene planes from the intercalated coke or coal compound using an ultrasonication, thermal shock exposure, mechanical shearing treatment, or a combination thereof to produce isolated graphene sheets.

The invention discloses a regenerated sandy soil conditioner and a preparation method thereof. The preparation method of the regenerated sandy soil conditioner comprises the following steps of: taking abandoned sludge of an urban sewage plant and cheap lignite as raw materials, preparing sodium humate with leonardite, weighing 90 parts of abandoned sludge of the urban sewage plant and 10 parts of sodium humate according to the mass ratio to be mixed and stirred for 30 minutes, and carrying out split charging and checking processes. The prepared regenerated sandy soil conditioner has the advantages of being simple in production process and low in raw material and production cost. Moreover, the regenerated sandy soil conditioner is suitable for large-scale popularization and application.

A method of producing graphene sheets from coke or coal powder, comprising: (a) forming an intercalated coke or coal compound by electrochemical intercalation conducted in an intercalation reactor, which contains (i) a liquid solution electrolyte comprising an intercalating agent; (ii) a working electrode that contains the powder in ionic contact with the liquid electrolyte, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, lignite coal, or natural coal mineral powder; and (iii) a counter electrode in ionic contact with the electrolyte, and wherein a current is imposed upon the working electrode and the counter electrode for effecting electrochemical intercalation of the intercalating agent into the powder; and (b) exfoliating and separating graphene planes from the intercalated coke or coal compound using an ultrasonication, thermal shock exposure, mechanical shearing treatment, or a combination thereof to produce isolated graphene sheets.

This invention relates to a kind of coal-water slurry including the following weight percentages: slurry: 20-25% of the oil field extracted solution containing 75-85% water, raw coal with the average size: 30-60mum and water: 5-20%. This invention applies the slurry processed from the oil field extracted solution as the dispersion stabilizing agent of coal-water slurry to cost the wastes of waste water and said slurry can be used directly without dewater, the pollutant water process agent is the graft product of leonardite.

In view of the foregoing, an embodiment of the disclosure provides a process of producing a granulated fertilizer and a granulated fertilizer made by the process. The process includes the steps of:

• • a) forming a dry mixture of:
    • i) about 10% to about 45% by weight poultry litter;
    • ii) about 20% to about 50% by weight ammonium sulfate;
    • iii) about 0% to about 30% by weight leonardite;
    • iv) about 0% to about 25% by weight biochar;
    • v) about 5% to about 25% by weight potassium sulfate; and
    • vi) about 0% to about 10% by weight ferrous sulfate;
  • b) granulating the dry mixture in a granulator to form a granulated dry mixture;
  • c) adding a binding agent to the granulated dry mixture to form a bound-granulated product; and
  • d) drying the bound-granulated product to form the granulated fertilizer.

A method of production and composition of a humic substances-based topical gel that contains a high concentration of polymerized humic substances in the form of polyelectrolyte-enhanced biopolymers, allowing for targeted application of gel to skin. A method of production consists of selection of humic substances containing material, extraction of humic substances from the material, polymerization of humic substances, and further processing for product preservation. Such humic substances based material may be derived from brown coal, such as leonardite or lignite, or peat. An extraction technique for extraction of the humic substances is an alkali extraction method. Such a resulting composition may contain sodium silicate as a gelling agent for ease of application, and in some embodiments a preservative or combination of preservatives for shelf life. Such a humic substances-based topic gel is water soluble, allowing for in-home application and ability to discard through washing down a household drain.

The invention discloses a chemical fertilizer for crops, and belongs to the field of chemical engineering. The chemical fertilizer for crops is prepared by taking 25 parts of leonardite, 3 parts of gluconic acid, 20 parts of ammonium nitro humate, 2 parts of dicyandiamide, 10 parts of urea, 0.05 part of trace elements and 30 parts of organic matters by weight as raw materials through the steps of reacting the leonardite and gluconic acid in water firstly; then, adding ammonium nitro humate into the obtained product to carry out a reaction under heating, adding dicyandiamide to react, and after the reacting is completed, adjusting the PH value to be neutral; finally, uniformly mixing the obtained product with urea, the trace elements and the organic matters. The chemical fertilizer for crops disclosed by the invention is mainly designed for crops, and has the effects of less application amount, high utilization rate, long fertilizer efficiency duration, and capability of improving the properties of soil, increasing the nutrition of crops, and increasing the yield of crops; the residues of the chemical fertilizer in crops are little, therefore, the chemical fertilizer does not cause damage to a human body.