Phosphogypsum metal adsorption material and preparation method thereof

An adsorption material, phosphogypsum technology, applied in the direction of non-metallic elements, chemical instruments and methods, and other chemical processes, can solve problems such as limited utilization of phosphogypsum, pollution of the atmosphere, water system, and soil, and encroachment on land resources to achieve reinforcement Effects of load stability, expansion of adsorption types, and strong operability

Inactive Publication Date: 2018-03-20
MAANSHAN JUNJUN FOOD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The large stockpiling of phosphogypsum not only encroached on land resources, but also polluted the atmosphere, water system and soil due to wind erosion and rain erosion.
How

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A phosphogypsum metal adsorption material, prepared by the following method:

[0021] (1) Flotate the phosphogypsum to remove organic matter on the surface, dry it and crush it until the particle size does not exceed 0.5mm, then put it into a calciner, heat up to 550°C and calcinate for 120 minutes, collect it after natural cooling to obtain pretreated phosphogypsum;

[0022] (2) Weigh triethylenetetramine, cyanuric chloride and epichlorohydrin at a molar ratio of 50:1:20, first mix triethylenetetramine and cyanuric chloride, and then adjust the pH to 9 with sodium hydroxide , raised the temperature to 80°C for 5 hours, then added epichlorohydrin to it, readjusted the pH to 9, and lowered the temperature to 15°C, reacted for 2 hours, and obtained a mixed solution system for use

[0023] (3) Mix 0.5mol / L magnesium sulfate solution and 1mol / L sodium hydroxide solution in equal volumes, stir for 10 minutes, then add magnesium sulfate powder to it, heat at 110°C for 10 hour...

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Abstract

The invention discloses a phosphogypsum metal adsorption material and a preparation method thereof. The phosphogypsum metal adsorption material is prepared from raw materials including phosphogypsum,triethylene tetramine, tricyanogen chloride, epichlorohydrin, ferric chloride, fly ash and the like. A high-adsorption-amount raw material is obtained by carrying out calcination treatment on the phosphogypsum; nano iron oxide is synthesized by utilizing a water phase, and adsorption varieties of pollutants are increased; the adsorption efficiency on heavy metal is improved; then the raw materialis dissolved into a mixed solution system of the triethylene tetramine, the tricyanogen chloride and the like, so that a metal ion complexing functional group on the adsorption material is increased;furthermore, a cation group can have a flocculation effect on solid suspension matters, colloids and the like, so that the adsorption material is used for removing heavy metal ions, oil stain and thelike at the same time; the phosphogypsum metal adsorption material has the advantages of simple raw materials, relatively low production cost, good technology repeatability, high operability and capability of realizing amplified production, and has relatively high economic value.

Description

technical field [0001] The invention relates to the technical field of adsorption materials, in particular to a phosphogypsum metal adsorption material and a preparation method thereof. Background technique [0002] With the continuous development of my country's industry, the heavy metals discharged in the production process of mining, machinery manufacturing, chemical industry, electronics, instrumentation and other industries are gradually increasing. Heavy metal pollution is one of the most serious environmental pollution and the most harmful industrial pollution to human beings. Heavy metal pollution is different from the pollution of other organic compounds. Many organic compounds can be purified physically, chemically or biologically in nature to reduce or eliminate their harmfulness. Heavy metals are enriched and difficult to degrade in the environment. At present, due to the mining, smelting and processing of heavy metals in China, many heavy metals such as lead an...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/06B01J20/10B01J20/30
CPCB01J20/045B01J20/06B01J20/103
Inventor 何松
Owner MAANSHAN JUNJUN FOOD TECH
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