Method for preparing trace element water-soluble fertilizer by utilizing manganese-containing slag and zinc-containing rotary kiln slag

A trace element, rotary kiln technology, applied in liquid fertilizers, fertilizer mixtures, applications, etc., can solve problems such as insufficient utilization of manganese-containing slag and zinc-containing rotary kiln slag, and achieve low sulfur and impurity metal elements. The effect of high iron content and full resource utilization

Active Publication Date: 2022-02-18
广西埃索凯循环科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] As mentioned above, at present, the utilization value of manganese-containing slag and zinc-containing rotary kiln slag has not been fully tapped, and related recycling technologies need to be further developed. Development is necessary, urgent, and has considerable economic and environmental benefits

Method used

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  • Method for preparing trace element water-soluble fertilizer by utilizing manganese-containing slag and zinc-containing rotary kiln slag
  • Method for preparing trace element water-soluble fertilizer by utilizing manganese-containing slag and zinc-containing rotary kiln slag
  • Method for preparing trace element water-soluble fertilizer by utilizing manganese-containing slag and zinc-containing rotary kiln slag

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The method for preparing trace element water-soluble fertilizer by utilizing manganese-containing slag and zinc-containing rotary kiln slag comprises the following steps:

[0055] The detection of the main components of the manganese-containing slag involved in the present embodiment is as follows:

[0056] Element mn Fe Si C Al Ca Mg K content(%) 9.27 13.54 12.72 6.18 2.86 0.59 0.24 0.75 Element Na Ni co Cr Pb Cd Zn Cu content(%) 0.87 0.073 0.035 0.038 0.006 0.008 0.12 0.032

[0057] The detection of the main components of the zinc-containing rotary kiln slag involved in this embodiment is as follows:

[0058] Element Fe C SiO 2

Fe 3 o 4

FeO FeS CaO content(%) 43.34 8.10 14.33 4.67 14.11 1.46 4.21 Element MgO MnO ZnO K 2 o

Al 2 o 3

CaS co content(%) 2.37 1.39 3.48 0.12 4.76 0.87 0.06 Element Cd Cu Cr Pb ...

Embodiment 2

[0074]The method for preparing trace element water-soluble fertilizer by utilizing manganese-containing slag and zinc-containing rotary kiln slag comprises the following steps:

[0075] The chemical composition data of the manganese-containing slag and the zinc-containing rotary kiln slag of the present embodiment are the same as in Example 1;

[0076] 1) Beating: mix the manganese-containing slag and zinc-containing rotary kiln slag that have passed through a 100-mesh sieve at a mass ratio of 6:1 to obtain a mixture, and put the mixture and water into the stirring tank at a solid-to-liquid mass ratio of 1:2 beating to obtain slurry;

[0077] 2) add promotor in the slurry that upward step obtains, after stirring evenly, add dropwise the concentrated sulfuric acid that mass content is 98% and carry out reduction leaching reaction, the addition of promotor is 5% of slurry quality, controls the adding speed of vitriol oil so that The reaction pH value is between 0-1.5, the react...

Embodiment 3

[0090] The method for preparing trace element water-soluble fertilizer by utilizing manganese-containing slag and zinc-containing rotary kiln slag comprises the following steps:

[0091] The chemical composition data of the manganese-containing slag and the zinc-containing rotary kiln slag of the present embodiment are the same as in Example 1;

[0092] 1) Beating: mix the manganese-containing slag and zinc-containing rotary kiln slag that have passed through a 100-mesh sieve at a mass ratio of 4:1 to obtain a mixture, and put the mixture and water into the stirring tank at a solid-to-liquid mass ratio of 1:4 beating to obtain slurry;

[0093] 2) add promotor in the slurry that upward step obtains, after stirring evenly, add dropwise the concentrated sulfuric acid that mass content is 98% and carry out reduction leaching reaction, the addition of promotor is 4% of slurry quality, controls the adding speed of vitriol oil so that The reaction pH value is between 0-1.5, the reac...

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Abstract

The invention discloses a method for preparing trace element water-soluble fertilizers by using manganese-containing slag and zinc-containing rotary kiln slag. The manganese-containing slag and zinc-containing rotary kiln slag are used as main raw materials, reacted under certain conditions, and after reduction and leaching, the zinc-containing rotary kiln slag is used The sulfide and highly active adsorption substances of the kiln slag remove harmful heavy metals such as nickel, cobalt, and lead, evaporate and concentrate, add regulators, and obtain liquid trace element water-soluble fertilizers, which comply with "NY 1428‑2010 Trace element water-soluble fertilizers" and "NY 1110 ‑2010 Limit Requirements for Water-Soluble Fertilizers Mercury, Arsenic, Cadmium, Lead, and Chromium "Standard water-soluble fertilizers for trace elements are waste-to-treasure, resource recycling, and have considerable economic and environmental benefits.

Description

【Technical field】 [0001] The invention relates to the technical field of water-soluble fertilizers, in particular to a method for preparing trace element water-soluble fertilizers by utilizing manganese-containing slag and zinc-containing rotary kiln slag. 【Background technique】 [0002] At present, industries such as new energy, smart grid, and electric vehicles have entered a period of explosive growth. As one of the main raw materials for cathode materials lithium manganate and ternary cathode materials, battery-grade manganese sulfate has a broad market demand prospect, and the current production of sulfuric acid Manganese raw material manganese ore mainly includes pyrolusite, rhodochrosite, and duromanganese ore. However, due to the increasingly scarce resources of rhodochrosite and duromanganese ore and the lower and lower mineral quality, the dominant position of pyrolusite as raw material will be further consolidated. The common process for producing manganese sulfat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G5/20
Inventor 梁余威肖宏赵思思刘文武刘伟胡宇晨夏翠芳李庭波唐兴桂刘钢墙
Owner 广西埃索凯循环科技有限公司
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