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A low-grade talc chemical fertilizer anti-caking agent and its preparation method and application

An anti-caking agent, low-grade technology, applied in the direction of application, fertilization device, fertilizer mixture, etc., to achieve the effect of less dosage, wide application range and simple preparation process

Inactive Publication Date: 2019-03-26
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to use the complex components of low-grade talc ore to increase the added value of talc through the integrated technology of ultra-fine crushing and surface modification, and apply it to anti-caking of chemical fertilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 100g of inorganic powder B and 1100ml of water to prepare a slurry with a slurry concentration of 8.33%. Dissolve 1g of stearic acid in 15mL of absolute ethanol, put it into the SMA-0.75 basket mill together with the pulp, the ball-to-material ratio is 66:1, carry out the integrated operation of ultrafine pulverization and surface modification, and grind for 3 hours , take out the pulp, dehydrate it with a vacuum filter, dry it in an electric blast drying oven at 80°C, and grind it finely with a high-speed pulverizer to obtain a fertilizer anti-caking agent. The whiteness of the product obtained is 90%. d 50 is 2.91 μm.

Embodiment 2

[0027] Example 2: Weigh 100g of inorganic powder B and 1100ml of water to prepare a slurry with a slurry concentration of 8.33%. Dissolve 2g of stearic acid in 30mL of absolute ethanol, put it into the SMA-0.75 basket mill together with the pulp, the ball-to-material ratio is 66:1, carry out the integrated operation of ultrafine pulverization and surface modification, and grind for 3 hours , take out the pulp, dehydrate it with a vacuum filter, dry it in an electric blast drying oven at 80°C, and grind it with a high-speed pulverizer to obtain a fertilizer anti-caking agent. The whiteness of the obtained product is 90.2%. d 50 is 2.85 μm.

Embodiment 3

[0028] Embodiment 3: Weigh 100g of inorganic powder B and 1100ml of water to prepare a slurry with a slurry concentration of 8.33%. Dissolve 3g of stearic acid in 45mL of absolute ethanol, put it into the SMA-0.75 basket mill together with the pulp, the ball-to-material ratio is 66:1, carry out the integrated operation of ultra-fine pulverization and surface modification, and grind for 3 hours , take out the pulp, dehydrate it with a vacuum filter, dry it in an electric blast drying oven at 80°C, and grind it with a high-speed pulverizer to obtain a fertilizer anti-caking agent. The whiteness of the obtained product is 90.85%. d 50 is 2.86 μm.

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Abstract

The invention relates to a low-grade talc chemical fertilizer anti-blocking agent as well as a preparation method and application. The low-grade talc chemical fertilizer anti-blocking agent is prepared from inorganic powder and a surfactant. The preparation method comprises the steps of crushing and grinding low-grade talc raw ore, blending materials and water according to a proportion to obtain ore pulp with a certain concentration, adding a certain quality of surfactant, performing integrated operation of ultrafine grinding and surface modification, after grinding for a certain time, taking out the ore pulp, dehydrating, drying and levigating so as to obtain the low-grade talc chemical fertilizer anti-blocking agent. The amount of the low-grade talc chemical fertilizer anti-blocking agent accounts for 1 percent to 5 percent of the total weight of the chemical fertilizer. The inorganic powder in the low-grade talc chemical fertilizer anti-blocking agent provided by the invention is capable of effectively preventing water-vapor exchange among fertilizer granules or between the fertilizer and the atmosphere, the surfactant can coat the surfaces of the fertilizer granules and enable the fertilizer granules to be lyophobic, and the fertilizer anti-blocking function is effectively realized. A product is extensive in source, low in cost, insoluble in water, pollution-free, and low in additive amount and the effective efficacy of the chemical fertilizer is not influenced.

Description

technical field [0001] The invention relates to the technical field of deep processing of low-grade talc, in particular to a low-grade talc chemical fertilizer anti-caking agent and its preparation method and application. Background technique [0002] my country is rich in talc resource reserves, and the proven reserves rank second in the world. In the past half a century, due to excessive and disorderly mining, small-scale sporadic production, and poor processing technology and equipment, high-quality talc resources have been consumed rapidly, and the problem of resource shortage has become prominent. In order to achieve sustainable development of talc resources, It is imminent to carry out research on the comprehensive utilization of low-grade talc and high value-added deep-processing products. So far, a large number of low-grade talc resources that have been discovered and proven reserves have not been effectively utilized. There are hundreds of millions of tons of talc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 谭琦赵毅刘玉林李一波
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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