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A method for preparing iron-titanium-vanadium ternary polymer flocculant by one-step method of hydrochloric acid acid-dissolving vanadium-titanium magnetite

A polymer flocculant, vanadium-titanium magnetite technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water treatment parameter control, etc., can solve the problem of large raw materials and low utilization rate of vanadium-titanium magnetite and other problems, to achieve the effect of less additives, high utilization rate and short process

Active Publication Date: 2022-05-31
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method involves more raw materials, and NaOH solution is difficult to dissolve non-amphoteric metal ions such as iron, titanium and vanadium, so the utilization rate of vanadium-titanium magnetite is relatively low

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0034] As a preferred embodiment of the present invention, the method for preparing the iron-titanium-vanadium ternary polymer flocculant by the one-step method of dissolving vanadium titanomagnetite in hydrochloric acid comprises the following steps:

[0035] The vanadium titanomagnetite was dried, pulverized into powder, and dried in an oven at 60°C to constant weight.

[0036] Weigh 10 g of the mineral powder obtained in step (1) into the reactor, and stir at 60 rpm for 5 h under the conditions of a leaching temperature of 80° C., a liquid-solid mass ratio of 4:1, and an initial hydrochloric acid concentration of 20%.

[0037] After the reaction is completed, the mixture in the reactor is subjected to suction filtration, and the volume of the leachate after suction filtration is measured at the same time, and the leachate is stored in a glass tube and stored at room temperature.

[0038] Dilute a part of the original leaching solution by 50 times, measure the concentration ...

Embodiment 2

[0041] As a preferred embodiment of the present invention, the method for preparing the iron-titanium-vanadium ternary polymer flocculant by the one-step method of dissolving vanadium titanomagnetite in hydrochloric acid comprises the following steps:

[0042] The vanadium titanomagnetite was dried, pulverized into powder, and dried in an oven at 60°C to constant weight.

[0043] Weigh 10 g of the mineral powder obtained in step (1) into the reactor, and stir at 80 rpm for 6 h under the conditions of a leaching temperature of 90° C., a liquid-solid mass ratio of 5:1, and an initial hydrochloric acid concentration of 10%.

[0044] After the reaction is completed, the mixture in the reactor is subjected to suction filtration, and the volume of the leachate after suction filtration is measured at the same time, and the leachate is stored in a glass tube and stored at room temperature.

[0045] A part of the original leaching solution was diluted 50 times, and the concentration of...

Embodiment 3

[0048] As a preferred embodiment of the present invention, the method for preparing the iron-titanium-vanadium ternary polymer flocculant by the one-step method of dissolving vanadium titanomagnetite in hydrochloric acid comprises the following steps:

[0049] The vanadium titanomagnetite was dried, pulverized into powder, and dried in an oven at 60°C to constant weight.

[0050] Weigh 10 g of the mineral powder obtained in step (1) into the reactor, and stir at 100 rpm for 10 h under the conditions of a leaching temperature of 100° C., a liquid-solid mass ratio of 6:1, and an initial hydrochloric acid concentration of 5%.

[0051] After the reaction is completed, the mixture in the reactor is subjected to suction filtration, and the volume of the leachate after suction filtration is measured at the same time, and the leachate is stored in a glass tube and stored at room temperature.

[0052] A part of the original leaching solution was diluted 50 times, and the concentration ...

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Abstract

The invention discloses a method for preparing an iron-titanium-vanadium ternary macromolecular flocculant by dissolving vanadium-titanium magnetite with hydrochloric acid in one step, and belongs to the technical field of flocculant preparation. In this method, the vanadium-titanium magnetite concentrate is used as raw material, which is dried and ground into powder, placed in a three-necked flask reactor, and hydrochloric acid is added for leaching reaction, and the reaction temperature, time, hydrochloric acid concentration, and liquid-solid ratio are controlled. The leaching reaction process is carried out under normal pressure under magnetic stirring. After the reaction is completed, filter the leaching solution in the reactor to obtain the filtrate, measure the concentration of dissolved metal ions with an inductively coupled plasma spectrometer, add different volumes of specific concentrations of sodium hydroxide to alkalinize it, and store it in a glass container after further aging. save. The present invention has the advantages of stable reaction, simple operation, easy control, and no need for high temperature. The obtained inorganic polymer flocculant has good stability, and the removal effect on organic matter is better than that of conventional aluminum-based flocculants, and the cost is relatively low. The convenience area has certain application prospects.

Description

technical field [0001] The invention belongs to the technical field of flocculants, and in particular relates to a method for preparing an iron-titanium-vanadium ternary polymer flocculant by a one-step method of dissolving vanadium titanomagnetite in hydrochloric acid. Background technique [0002] Coagulation is one of the most commonly used methods in the water treatment process. It has the characteristics of simplicity, economy and high efficiency. However, when treating organic wastewater, the effect of conventional flocculants is often not ideal. According to the chemical composition, flocculants can be divided into two categories: inorganic flocculants and organic flocculants, among which inorganic flocculants have a stronger ability to remove organic matter than organic flocculants. However, the organic removal capacity of the most commonly used aluminum-based and iron-based flocculants still cannot meet the treatment requirements of some organic wastewater. Titaniu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F101/30
CPCC02F1/5236C02F1/5245C02F2101/30C02F2209/20C02F2209/11Y02P10/20
Inventor 聂煜东耿媛媛沈倩颜海燕申粤李金
Owner CHONGQING UNIV OF TECH
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