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Production process of ferrous disulfide

A ferrous disulfide, production technology technology, applied in the chemical industry, can solve the problem of not reaching the ideal value and the like

Inactive Publication Date: 2016-12-14
刘长福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ferrous disulfide produced by mechanical grinding of pyrite is used to provide fertilizers for iron (Fe) and sulfur (S) for crops, and as an improving agent to condition alkaline soil, which has certain effects. However, far from ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0070] A. Preparation of disulfide saturated solution

[0071] Dissolve 280 grams of sodium disulfide in 200 grams of water and stir to dissolve completely to obtain a saturated solution of sodium disulfide at normal temperature (25° C.) to make No. 1 solution for later use

[0072] Dissolve 260 grams of ammonium disulfide in 200 grams of water, stir and dissolve completely to obtain a saturated solution of diammonium disulfide at room temperature (25°C), and prepare the No. 2 solution for later use

[0073] Dissolve 360 ​​grams of potassium disulfide in 200 grams of water, stir and dissolve completely to obtain a saturated solution of dipotassium disulfide at normal temperature (25° C.), and make No. 3 solution for subsequent use.

[0074] Dissolve 712 grams of ferrous sulfate in 2700 grams of water, stir and dissolve completely to obtain a saturated solution of ferrous sulfate at normal temperature (25° C.), and make No. 4 solution for subsequent use.

[0075] 1000 gram fer...

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Abstract

The invention provides a production process of ferrous disulfide, and belongs to chemurgy. The following raw materials including sodium disulfide, ammonium disulfide, potassium disulfide, ferrous sulfate, ferrous ammonium sulfate and ferrous chloride are required in a synthesis process. The sodium disulfide, the ammonium disulfide, the potassium disulfide, the ferrous sulfate, the ferrous ammonium sulfate and the ferrous chloride are respectively dissolved into water at the normal temperature of 25 DEG C to be made into a saturated solution; the sodium disulfide, the ammonium disulfide and the potassium disulfide can be sequentially matched with the ferrous sulfate, the ferrous ammonium sulfate and the ferrous chloride, and can also be respectively combined and matched to obtain a ferrous disulfide suspension solution. Vacuum suction filtration, drying and drying are performed, and then, crushing is performed to obtain ferrous disulfide powder. The synthesized ferrous disulfide suspension solution and the ferrous disulfide powder have wide purposes on agriculture; good market prospects are realized; a promotion effect is achieved on promoting the agriculture modernization construction in China; certain economic benefits and social benefits can be achieved on agricultural means of production enterprises and the society.

Description

technical field [0001] The invention belongs to chemical industry, in particular to a production process of ferrous disulfide. Background technique [0002] Ferrous disulfide, Chinese alias: pyrite; pyrite; sulfur concentrate sand; iron sulfide; ore iron ore; sulfur concentrate powder; , Properties: yellow cubic crystal, melting point: 1171°C density: 5.0g / cm3. [0003] The main component of pyrite is diamagnetic. Inactive substance at room temperature. It becomes lively when the temperature rises. Oxidized into ferric oxide and sulfur dioxide in air: 4FeS2+1102===high temperature===2Fe2O3+8SO2, 2SO2+O2==vanadium pentoxide V2O5 (catalyst) or 400℃~500℃==2SO3,SO3 +H2O==H2SO4, mainly used for producing sulfur by contact method. [0004] The chemical composition of pyrite is FeS2, and the crystal belongs to the sulfide mineral of equiaxed crystal system. The composition usually contains cobalt, nickel and selenium, and has a NaCl type crystal structure. There are often co...

Claims

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Application Information

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IPC IPC(8): C01G49/12
CPCC01G49/12
Inventor 刘长福
Owner 刘长福
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