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Method for preparing calcium sulfate composite fertilizer by using solid waste titanium gypsum

A solid waste, titanium gypsum technology, applied in calcium fertilizers, ammonium orthophosphate fertilizers, alkaline orthophosphate fertilizers, etc., can solve the problems of secondary dust, occupation of large land, and large economic burden of titanium dioxide enterprises. Achieve the effect of benefiting heat absorption and warming, reducing surface crusting, good moisturizing and stomata

Inactive Publication Date: 2016-09-21
SHANDONG DONGJIA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The discharge of titanium gypsum not only occupies a large amount of land and is likely to cause environmental risks such as secondary dust, but also causes a great economic burden to titanium dioxide enterprises.

Method used

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  • Method for preparing calcium sulfate composite fertilizer by using solid waste titanium gypsum
  • Method for preparing calcium sulfate composite fertilizer by using solid waste titanium gypsum
  • Method for preparing calcium sulfate composite fertilizer by using solid waste titanium gypsum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of fertilizer additives: Add 3 g of linseed oil, 1 g of sodium stearate, 2 g of N-methylolacrylamide, and 3 g of ethanol into 100 g of water, and stir for 60 minutes for later use.

[0027] (2) Add 100g of titanium gypsum, 10g of ammonium sulfate, 5g of potassium humate, and 10g of monoammonium phosphate into the mixing chamber for material mixing. The mixing chamber adopts triple-helix stirring. After stirring for 30 minutes, it is mixed and extruded by twin-screw. 3% fertilizer additives are added to the front section of the twin-screw extruder (calculated based on the mass of the material in the mixing chamber), and the material extruded by the twin-screw extruder enters the granulator for granulation, and the particle size is required to be controlled at 2mm. Bao, which is calcium sulfate compound fertilizer, can be used as fertilization for the bottom layer of farmland pears.

Embodiment 2

[0029] (1) Preparation of fertilizer additives: Add 4 g of linseed oil, 2 g of sodium stearate, 3 g of N-methylolacrylamide, and 4 g of ethanol into 100 g of water, and stir for 60 minutes for later use.

[0030] (2) Add 100g of titanium gypsum, 20g of ammonium sulfate, 6g of potassium humate, and 20g of monoammonium phosphate into the mixing chamber for material mixing. The mixing chamber adopts triple-helix stirring. After stirring for 30 minutes, it is mixed and extruded by twin-screw. 4% fertilizer additives are added to the front section of the twin-screw extruder (calculated based on the mass of the material in the mixing bin), and the material extruded by the twin-screw extruder enters the granulator for granulation, and the particle size is required to be controlled at 3mm. Bao, which is calcium sulfate compound fertilizer, can be used as fertilization for the bottom layer of farmland pears.

Embodiment 3

[0032] (1) Preparation of fertilizer additives: Add 5 g of linseed oil, 3 g of sodium stearate, 4 g of N-methylolacrylamide, and 5 g of ethanol into 100 g of water, and stir for 60 minutes for later use.

[0033] (2) Add 100g of titanium gypsum, 30g of ammonium sulfate, 9g of potassium humate, and 30g of monoammonium phosphate into the mixing chamber for material mixing. The mixing chamber adopts triple-helix stirring. After stirring for 30 minutes, it is mixed and extruded by twin-screw. Add 6% fertilizer additives to the front section of the twin-screw extruder (calculated based on the material quality in the mixing bin), and the material extruded by the twin-screw extruder enters the granulator for granulation, and the particle size is required to be controlled at 5mm. Bao, which is calcium sulfate compound fertilizer, can be used as fertilization for the bottom layer of farmland pears.

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Abstract

The invention belongs to the technical field of preparation of fertilizers, and concretely relates to a method for preparing a calcium sulfate composite fertilizer by using solid waste titanium gypsum. The method comprises the following steps: 1, preparing a fertilizer additive: adding flaxseed oil, sodium stearate, N-hydroxymethyl acrylamide and ethanol to water, and stirring above added materials to obtain the fertilizer additive for later use; and 2, adding titanium gypsum, ammonium sulfate, potassium humate and monoammonium phosphate to a mixing bin, mixing added materials, carrying out triple helical stirring, carrying out double-screw mixing extrusion on the obtained mixture, adding the fertilizer additive to the front segment of a double-screw extruder, allowing a material extruded through the double-screw extruder to a granulator, granulating the material, and bagging the granulated material to obtain the calcium sulfate composite fertilizer. The calcium sulfate composite fertilizer prepared through using the titanium gypsum is different from other chemically synthesized composite fertilizers, and the production process of the composite fertilizer and the final product are safe, environmentally-friendly and nontoxic, and are harmless to human bodies and animals.

Description

technical field [0001] The invention belongs to the technical field of fertilizer preparation, and in particular relates to a method for preparing calcium sulfate compound fertilizer by using solid waste titanium gypsum. Background technique [0002] The rocks on the earth's surface undergo long-term physical and chemical weathering to form soil-forming parent materials. The soil-forming parent material has been subjected to the action of organisms year after year to form a fertile soil that can grow green plants. The fertility of the soil mainly comes from the nutrients in the soil. The nutrients in the soil mainly exist in two chemical forms, inorganic and organic, but plants generally absorb nutrients in the inorganic form. Therefore, the implementation and supplementation of nutrients in inorganic form is very important for the high yield of crops and the improvement and protection of soil. At present, the supply of potassium, calcium, sulfur and other medium elements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05G3/00C05B7/00C05C3/00C05D3/00C05F11/02
Inventor 李化全张华军孙鹏
Owner SHANDONG DONGJIA GRP CO LTD
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