Method for preparing precipitated barium sulfate by utilizing titanium white waste acid

A technology for precipitating barium sulfate and titanium white waste acid, applied to chemical instruments and methods, calcium/strontium/barium sulfate, titanium compounds, etc., can solve the problems of many steps, cumbersome impurity removal process, and long processing time, and achieve Good economy, reduce processing cost and environmental protection pressure, and save resources

Active Publication Date: 2018-02-23
ANHUI JXTB GRP
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method utilizes white carbon black waste liquid to produce precipitated barium sulfate, and the white carbon black waste liquid impurity composition is different from titanium white waste acid, does not contain ferrous sulfate, does not involve the method for removing ferrous sulfate, and the impurity removal process of this method is loaded down with trivial details, T...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing precipitated barium sulfate by utilizing titanium white waste acid
  • Method for preparing precipitated barium sulfate by utilizing titanium white waste acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Step 1. Transfer a certain amount of titanium white waste acid from the waste acid storage tank to the neutralization tank, start stirring, and evenly add ammonia water to the neutralization tank through the ammonia water storage tank to neutralize the titanium white waste acid to generate ammonium sulfate solution. According to the online pH According to the detection data of the probe, the pH of the neutralization tank system is controlled at 3.0, and the addition of ammonia water is stopped, and the concentration of the ammonia solution is 25%.

[0059] Step 2: Stir the neutralized solution and precipitate in the neutralization tank for 20 minutes to make titanyl sulfate generate orthotitanic acid precipitation reaction fully, then pump it to the frame filter press for filtration, and the filtrate from the frame filter press The filtrate exits into the primary iron removal tank, and the ortho-titanic acid filter cake can be used for titanium dioxide production after c...

Embodiment 2

[0069] Step 1. Transfer a certain amount of titanium white waste acid from the waste acid storage tank to the neutralization tank, start stirring, and add ammonia water to the neutralization tank through the ammonia water storage tank at a molar ratio of 2:1 to neutralize the titanium white waste acid to generate sulfuric acid Ammonium solution, according to the detection data of the online pH probe, control the pH of the neutralization tank system at about 3.0, stop adding ammonia water, the concentration of the ammonia solution is 27%, at this time, the titanyl sulfate in the titanium white waste acid produces orthotitanic acid precipitation;

[0070] Step 2: Stir the neutralized solution and precipitate in the neutralization tank for 30 minutes to make titanyl sulfate generate orthotitanic acid precipitation reaction fully, then pump it to the frame filter press for filtration, and the filtrate from the frame filter press The filtrate exits into the primary iron removal tank...

Embodiment 3

[0080] Step 1. Transfer a certain amount of titanium white waste acid from the waste acid storage tank to the neutralization tank, start stirring, and add ammonia water to the neutralization tank through the ammonia water storage tank at a molar ratio of 2:1 to neutralize the titanium white waste acid to generate sulfuric acid Ammonium solution, according to the detection data of the online pH probe, control the pH of the neutralization tank system at about 3.0, stop adding ammonia water, the concentration of the ammonia solution is 28%, at this time, the titanyl sulfate in the titanium dioxide waste acid produces orthotitanic acid precipitation;

[0081] Step 2: Stir the neutralized solution and the precipitate in the neutralization tank for 40 minutes to make titanium oxysulfate generate orthotitanic acid precipitation reaction fully, then pump it to the frame filter press for filtration, and the filtrate from the frame filter press The filtrate exits into the primary iron re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing precipitated barium sulfate by utilizing titanium white waste acid, belonging to the technical field of comprehensive utilization of titanium white wasteacid and preparation of barium sulfate. The method comprises the following steps of adding ammonium hydroxide to neutralize with titanium white waste acid firstly, then generating ammonium sulfate, and controlling a systemic pH to separate out photodegredation sediment; then adding the ammonium hydroxide continuously, and controlling the pH to separate out ferrous hydroxide sediment; then addinghydrogen peroxide in proportion, oxidating residual Fe2<+> into Fe3<+>, and adjusting the pH to separate out ferric hydroxide sediment; condensing an ammonium sulfate solution, then replacing a mirabilite solution in a traditional precipitated barium sulfate production process, enabling the ammonium sulfate solution to generate replacement reaction with a barium sulfide solution, and washing, drying and smashing to prepare a precipitated barium sulfate product. According to the method, after neutralizing the titanium white waste acid with the ammonium hydroxide and performing purification andimpurity removal, a traditional sodium sulfate solution is replaced for producing the precipitated barium sulfate, meanwhile, recycled photodegredation sediment can be further used for titanium dioxide production, not only are resources saved, but also waste can be recycled, and the waste acid treatment costs of titanium dioxide plants and environment protection pressure are reduced.

Description

technical field [0001] The invention relates to the technical field of barium sulfate preparation, more specifically, relates to a method for preparing precipitated barium sulfate by utilizing titanium white waste acid. Background technique [0002] Barium sulfate is an important basic chemical raw material, widely used in coatings, inks, rubber, plastics, fillers for insulating tapes, surface coating agents for impression paper and coated paper, sizing agents for textiles, and weighting agents for deep well drilling . It is also used in various industries such as pigments, ceramics, storage batteries, enamel, mineral processing, adhesives, medicine, glass and spices, and is also a raw material for the production of other barium salts. [0003] The production process of barium sulfate in my country is mainly the black ash-glauber's salt method: barite and coal are mixed in a certain proportion, crushed and sent to the rotary kiln, and reduced and roasted at high temperature...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01F11/46C01C1/20C01G23/00
Inventor 陶厚东
Owner ANHUI JXTB GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap