Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Solidification and stabilization treatment method for electrolytic manganese slag

A technology of stabilization treatment and stabilization treatment agent, applied in the field of electrolytic manganese slag solidification and stabilization treatment, can solve the problems of poor ammonia nitrogen fixation effect and high price, and achieve the advantages of reducing the cost of solidification treatment, reducing the dosage, and strengthening physical and mechanical properties. Effect

Active Publication Date: 2018-08-21
KUNMING UNIV OF SCI & TECH
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using cement to treat electrolytic manganese slag, the treatment agent has a certain curing effect on manganese ions in the slag, but the fixation effect on ammonia nitrogen in the slag is poor. Manganese reacts under the action of alkaline reagents and air to form manganese dioxide. gas volatilization
Sodium dihydrogen phosphate + calcium oxide + magnesium oxide and polyacrylamide are used as harmless treatment agents for electrolytic manganese slag. Although heavy metals and free ammonia nitrogen can be effectively solidified, the agents used are chemical reagents, which are expensive

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
  • Solidification and stabilization treatment method for electrolytic manganese slag
  • Solidification and stabilization treatment method for electrolytic manganese slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh electrolytic manganese slag, add solidification and stabilization treatment agent (82.8% ferronickel slag, 17.2% sodium phosphate) by weight of electrolytic manganese slag, mix and stir for 5 minutes; then add water with 30% weight of electrolytic manganese slag, mix and stir for 5 minutes , The solidified and stabilized electrolytic manganese slag is sent to the slag warehouse for storage, in which the ferronickel slag is ground through an 80-mesh sieve, and the sieve residue is 4%.

[0017] The solidified and stabilized electrolytic manganese slag is leached by the "HJ 557-2010" method, and the toxicity leaching result is lower than the standard limit of "GB 8978-1996".

Embodiment 2

[0019] Weigh the electrolytic manganese slag, add solidification and stabilization treatment agent (76.5% ferronickel slag, 23.5% sodium phosphate) with 17% weight of electrolytic manganese slag, mix and stir for 6 minutes; then add water with 25% weight of electrolytic manganese slag, mix and stir for 3 minutes , The solidified and stabilized electrolytic manganese slag is sent to the slag warehouse for storage, in which the ferronickel slag is ground through an 80-mesh sieve with a sieve allowance of 3%.

[0020] The solidified and stabilized electrolytic manganese slag is leached by the "HJ 557-2010" method, and the toxicity leaching result is lower than the standard limit of "GB 8978-1996".

Embodiment 3

[0022] Weigh the electrolytic manganese slag, add solidification and stabilization treatment agent (68.4% ferronickel slag, 31.6% sodium phosphate) by weight of electrolytic manganese slag, mix and stir for 8 minutes; then add water with 33% weight of electrolytic manganese slag, mix and stir for 5 minutes , The solidified and stabilized electrolytic manganese slag is sent to the slag warehouse for storage, in which the ferronickel slag is ground through an 80-mesh sieve, and the sieve residue is 4%. The SEM photo of the solidified and stabilized electrolytic manganese slag is shown in figure 2 , it can be seen from the figure that after the electrolytic manganese slag is solidified and stabilized, its irregular particles and columnar particles ( figure 1 ) is integrated with the product gel to form a hardened body with a dense structure ( figure 2 ).

[0023] The solidified and stabilized electrolytic manganese slag is leached by the "HJ 557-2010" method, and the toxicity...

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 relates to a solidification and stabilization treatment method for electrolytic manganese slag, and belongs to the technical field of environmental protection. According to the method, amixture of nickel-iron slag and phosphate serves as a solidification and stabilization treating agent for the electrolytic manganese slag, and the solidified and stabilized electrolytic manganese slag is sent to a slag warehouse for stockpiling; by using the method, the usage amount of the chemical reagent can be decreased, the solidification treatment cost of the electrolytic manganese slag canbe lowered, and meanwhile, the effect of treating waste with waste can be achieved; and the electrolytic manganese slag is solidified by the mixture of the nickel-iron slag and the phosphate, solublemanganese and ammonium ions in the manganese slag can participate in the chemical reaction and can form a phosphate gel mineral in a chemical bonding mode, and a formed phosphate chemically-bonded material has the physical inclusion and adsorption effects; and through the chemical bonding, physical adsorption and physical inclusion effects, the high-efficiency and high-capacity solidification of the electrolytic manganese slag can be realized.

Description

technical field [0001] The invention specifically relates to a solidification and stabilization treatment method for electrolytic manganese slag, which belongs to the technical field of environmental protection. Background technique [0002] Solidification / stabilization technology is the main means of harmless treatment of toxic and hazardous solid waste in the world. It wraps toxic pollutants by adding cementing materials, viscous agents and inert materials, so that pollutants are not easy to leach. The harmless disposal of electrolytic manganese slag is mainly solidification and stabilization of toxic pollutants such as manganese, ammonia nitrogen, arsenic, mercury, selenium, chromium and other compound pollutants, and the focus is on the solidification and stabilization of soluble manganese and ammonia nitrogen. Fang Xuanjin et al. used ordinary Portland cement to solidify electrolytic manganese slag. Zhou et al. used CaO and NaOH to treat heavy metals and ammonia nitrog...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
CPCB09B3/25
Inventor 罗中秋刘佳辉周新涛和森
Owner KUNMING UNIV OF SCI & TECH
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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com