Method for preparing ceramsite adsorbing material from manganese slag

A technology for adsorbing materials and manganese slag, applied in the field of preparing ceramsite adsorbent materials, can solve the problems of high processing cost, low production efficiency, insufficient resource utilization, etc., so as to solve the problem of storage yard occupation, increase adsorption effect, and improve utilization value. Effect

Inactive Publication Date: 2019-05-17
HUNAN YONKER ENVIRONMENTAL PROTECTION RES INST +1
View PDF13 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current treatment methods of electrolytic manganese slag are direct landfilling and stacking, so there are problems such as insufficient resource utilization, low production efficiency, serious environmental pollution, and high cost of site occupation, which seriously plague electrolytic manganese production enterprises and local people.
[0003] The currently disclosed technologies for using manganese slag include: "200610050960.4 Method for producing ecological cementitious materials by using electrolytic manganese slag", which has limited utilization of manganese slag and complicated process; "91103273.8 Treatment method and products of electrolytic manganese slag ash, 99115241.7 "Electromanganese slag land treatment full-price matrix total control method", the added value of manganese slag products is low; "200610050961.9 Method for producing cement by using electrolytic manganese slag", this technology has not fully exploited the value of manganese slag; "CN101306425 A The process of comprehensive utilization of electrolytic manganese slag", this technology washes the soluble matter out and recycles, and the filter residue is used as building materials and other materials; "CN 101579685 B A method for processing and utilizing electrolytic manganese waste residue" This technology can convert electrolytic manganese waste Manganese sulfate, which is not easy to separate manganese, is converted into manganese carbonate, which can easily separate manganese; Ammonium sulfate, which is difficult to separate nitrogen, can be converted into ammonium aluminum sulfate dodecahydrate, which can easily separate nitrogen. However, the technology is complicated and the processing cost is high, so it is not suitable for large-scale industrial processing.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Weigh 1 kg of manganese slag from an electrolytic manganese company in Hunan, in which the manganese content is 3.5% (wet basis) and the sulfate radical is 1.8%. Soak in 2L mixed solution containing 0.5mol / L sodium hydroxide and 0.5mol / L sodium carbonate and stir for 2 hours, then filter.

[0032] 2. Further add 0.1kg of water glass and 0.1L of 1wt% carboxypropyl cellulose, mix evenly in a kneader, extrude to granulate, and dry at 120°C.

[0033] 3. Further calcining the dried manganese sand at 600° C. for 2 hours, and cooling to obtain the ceramsite adsorption material.

[0034] 4. Take 20L of copper-containing electroplating wastewater from an electroplating industrial park in a development zone in Hubei, the copper content is 20mg / L, pH=4.5, add 0.3kg of manganese sand, stir for 2 hours, filter, and the filtrate (drainage) detects that the copper content is 0.31mg / L , can meet emission standards.

Embodiment 2

[0036] 1. Take 5kg of manganese slag from an electrolytic manganese company in Ningxia, and dry it at 120°C. The manganese content is 8.5% (dry basis), the sulfate radical is 4.5%, and the moisture content is 38.8%.

[0037] 2. Prepare sodium carbonate alkali solution, in which sodium hydroxide is 0.4mol / L and sodium carbonate is 0.8mol / L.

[0038] 3. Weigh 2 kg of manganese slag, add 5 L of sodium carbonate alkali solution, stir for 1.5 hours, and filter.

[0039] 4. Add 0.2kg of borax and 0.1L of 1wt% carboxypropyl cellulose, mix evenly in a kneader, extrude to granulate, and dry at 120°C.

[0040] 5. Dry at 120°C, calcined at 725°C for 2 hours, and cool to obtain ceramsite adsorption material.

[0041] 6. Take 20L of pretreated copper-containing waste water from a copper company in Jiangxi, where the copper content is 53mg / L, pH=5.3, add 0.4kg of ceramsite adsorption material, stir for 2 hours, filter, and detect the copper content in the filtrate (drainage) It is 0.48mg / ...

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 a ceramsite adsorbing material from manganese slag. The method comprises the following steps: the manganese slag is cleaned with a cleaning solution which is a mixed solution of alkali and carbonate, an adhesive is added to the cleaned manganese slag, the materials are mixed uniformly and pressed into particles, the particles are dried, calcined an cooled, and the ceramsite adsorbing material is obtained. The manganese slag is successfully used for adsorbing heavy metals in wastewater, the use value of the manganese slag can be increased, the costcan be reduced, further, waste can be changed into wealth, and environmental pollution can be reduced.

Description

technical field [0001] The invention relates to a method for preparing ceramsite adsorption material by using manganese slag, in particular to a process for comprehensive utilization of electrolytic manganese slag and further preparation of ceramsite adsorption material. Background technique [0002] In the process of producing metal manganese, the electrolytic manganese plant will discharge a large amount of solid waste - manganese slag. Manganese slag not only occupies a large amount of land and devours good fields, but also the harmful gas emitted by manganese slag directly affects the health of nearby people, which is even more serious The most important thing is: the liquid seeping from the manganese slag slowly soaks into the ground to pollute the water quality, and the harmful substances include a variety of heavy metals and excessive ammonia nitrogen. At the same time, there is a considerable amount of available manganese, nickel, nitrogen, etc. in the electrolytic m...

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): B01J20/28B01J20/02B01J20/30C02F1/28C04B33/138C04B38/02C02F101/20C02F103/16
CPCY02P40/60
Inventor 宋乐山刘锐利言海燕何磊胡婷王艳宋林啸
Owner HUNAN YONKER ENVIRONMENTAL PROTECTION RES INST
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