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A method for ultrasonically coupled subcritical extraction of potassium from stone processing saw mud

A stone processing, ultrasonic coupling technology, applied in the direction of improving process efficiency, can solve the problems of low enterprise enthusiasm, low resource utilization efficiency, damage to mountain ecology, etc., to achieve convenient industrial production, good market prospects, and create economic benefits. Effect

Active Publication Date: 2020-11-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two disposal methods have corresponding disadvantages. For example, pit backfilling will pollute groundwater and destroy mountain ecology; processing into building materials requires high energy consumption, low resource utilization efficiency, and low enthusiasm for enterprises.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for ultrasonically coupled subcritical extraction of potassium in stone processing saw mud, comprising the following steps:

[0037] (1) Carrying out iron removal by electromagnetic method for stone material processing sawing mud for 3 times, then removing iron by magnetic stirring method in water environment, washing and drying to obtain granular sawing mud;

[0038] (2) Get granular saw slime 10g and 100mL concentration and mix uniformly with the oxalic acid solution of 15g / L;

[0039] (3) The reaction system of step (2) is placed in an ultrasonic device, and the ultrasonic treatment frequency is 40 kHz for 120 min, and the ultrasonic temperature is 30 ° C. During the reaction, the temperature control is realized by circulating cooling water, and the saw sludge is further processed. Broken, the particle size becomes smaller and the specific surface area becomes larger, which is conducive to the dissolution of potassium ions.

[0040] (4) Place the ultrasonic...

Embodiment 2

[0044] A method for ultrasonically coupled subcritical extraction of potassium in stone processing saw mud, comprising the following steps:

[0045] (1) Carrying out iron removal by electromagnetic method for stone material processing sawing mud for 3 times, then removing iron by magnetic stirring method in water environment, washing and drying to obtain granular sawing mud;

[0046] (2) Get granular saw slime 10g and 100mL concentration and mix uniformly with the oxalic acid solution of 10g / L;

[0047] (3) The reaction system of step (2) is placed in an ultrasonic device, and the ultrasonic treatment frequency is 40 kHz for 120 min, and the ultrasonic temperature is 30 ° C. During the reaction, the temperature control is realized by circulating cooling water, and the saw sludge is further processed. Broken, the particle size becomes smaller and the specific surface area becomes larger, which is conducive to the dissolution of potassium ions.

[0048] (4) Place the ultrasonic...

Embodiment 3

[0052] A method for ultrasonically coupled subcritical extraction of potassium in stone processing saw mud, comprising the following steps:

[0053] (1) Carrying out iron removal by electromagnetic method for stone material processing sawing mud for 3 times, then removing iron by magnetic stirring method in water environment, washing and drying to obtain granular sawing mud;

[0054] (2) Get granular saw slime 10g and 100mL concentration and mix uniformly with the oxalic acid solution of 15g / L;

[0055] (3) The reaction system of step (2) is placed in an ultrasonic device, and the ultrasonic treatment frequency is 40 kHz for 120 min, and the ultrasonic temperature is 30 ° C. During the reaction, the temperature control is realized by circulating cooling water, and the saw sludge is further processed. Broken, the particle size becomes smaller and the specific surface area becomes larger, which is conducive to the dissolution of potassium ions.

[0056] (4) Put the ultrasonic e...

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Abstract

The invention relates to a method for ultrasonic and subcritical coupled extracting of potassium from stone machining saw mud. According to the method, ultrasonic treatment and subcritical treatment are organically coupled, the leaching rate of effective components is improved, organic matter in the saw mud is effectively removed, and few other impurities are doped. Meanwhile, operation is conducted at the low temperature and pressure, and effective component damage is avoided. The process is simple, the extraction time is short, energy consumption is low, industrial production is convenient,and good market prospects are achieved.

Description

technical field [0001] The invention relates to a method for ultrasonically coupled subcritical extraction of potassium from stone processing saw mud, and belongs to the technical field of waste recovery and reuse. Background technique [0002] my country is a large agricultural country and one of the world's largest demanders of potash salt and potash fertilizer. Potash fertilizer consumption has always been greater than production, and there is a huge gap in potash fertilizer. Rational development and utilization of insoluble potassium-containing salt mines with abundant domestic reserves to prepare potassium fertilizers, active development of potassium extraction technology, and exploration of new fertilizer utilization methods can alleviate the contradiction between supply and demand of potassium fertilizers in my country to a certain extent. At present, the raw materials for the production of potassium fertilizer are mainly potassium feldspar and other potassium-rich st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B26/10
CPCY02P10/20
Inventor 刘春光郑彤彤张惠玲
Owner SHANDONG UNIV
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