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Co-processing method of waste cathode ray tube lead glass and waste battery lead paste

A waste battery and co-processing technology, applied in battery recycling, electronic waste recycling, waste collector recycling, etc., can solve problems such as high investment in fixed assets and operating costs, no good market prospects, and inability to actually industrialize production, etc., to achieve adaptable effect

Active Publication Date: 2016-03-16
湖北金洋冶金股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality of building materials made of CRT glass, such as foam glass, glass ceramics, ceramic glazes, and concrete, is up to standard, but compared with similar lead-free products, it is difficult for people to accept, and there is no good market prospect.
The vacuum smelting method and mechanical activation method specially used for CRT glass lead smelting are still in the stage of laboratory research, although the recovery efficiency of metal lead is high.
The British nulife electric furnace that specializes in smelting CRT conical glass, which started operation in 2012, has a small amount of application in Europe and the United States, but because of its high investment in fixed assets and operating costs, it cannot be actually industrialized in my country.

Method used

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  • Co-processing method of waste cathode ray tube lead glass and waste battery lead paste

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Experimental program
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Effect test

Embodiment 1

[0020] Take 50 tons of lead-containing glass of waste cathode ray tubes after coarse crushing, with a lead content of 22%, 200 tons of desulfurized lead paste for waste batteries, with a lead content of 70%, add 30 tons of limestone, 20 tons of iron filings, add natural gas smelting furnace, and smelting temperature at 1000°C for 4 hours, 120 tons of crude lead and 100 tons of slag were obtained, and the lead content in the slag was 1.5%.

[0021] After analysis, the lead recovery rate of cathode ray tube in CRT funnel glass is 85%, and the lead recovery rate in lead paste is 97%.

Embodiment 2

[0023] Take 100 tons of lead-containing glass of waste cathode ray tubes after coarse crushing, with a lead content of 22%, 200 tons of lead plaster (not desulfurized) of waste lead storage batteries, with a lead content of 78%, add 60 tons of limestone, and 40 tons of pyrite slag, Add lead to the blast furnace, the smelting temperature is 900~1200°C, and 170 tons of crude lead are obtained, and the lead content in the slag is 2.0%.

[0024] After analysis, the lead recovery rate of cathode ray tube in CRT funnel glass is 85%, and the lead recovery rate in lead paste is 97%.

Embodiment 3

[0026] Take 2 tons of lead-containing glass of waste cathode ray tubes after coarse crushing, with a lead content of 22%, 20 tons of lead paste (not desulfurized) of waste lead storage desulfurization batteries, with a lead content of 70%, add 5 tons of limestone, 3 tons of iron filings, and add Lead reverberatory furnace, the melting temperature is 1000~1200℃, and 13 tons of crude lead are obtained, and the lead content in the slag is 2.2%.

[0027] After analysis, the lead recovery rate of cathode ray tube in CRT funnel glass is 80%, and the lead recovery rate in lead paste is 90%.

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Abstract

The invention relates to a co-processing method for waste cathode ray tube lead-containing glass and waste storage battery lead paste. Coarsely crush the leaded glass of waste cathode ray tubes to obtain glass blocks below 3cm; mix the waste battery lead paste with the above glass blocks, add some other fluxes such as calcium carbonate, scrap iron or pyrite slag, and mix; mix The final material enters the smelting furnace and is reduced with charcoal to generate crude lead and smelting residue. The lead recovery rate of lead paste can reach more than 90%, the lead recovery rate of CRT cone glass can reach more than 80%, and the lead content of smelting waste residue is less than 2.2%. The crude lead produced can be further refined into lead alloy or refined lead. The method has strong adaptability, environmental protection and economy, and can be used in large-scale industrial production.

Description

technical field [0001] The invention relates to the field of harmless disposal of hazardous waste, in particular to a method for co-processing waste cathode ray tube lead-containing glass and waste battery lead paste. Background technique [0002] Cathode ray tube (CRT) is the earliest and most widely used display technology in industrial production. It has the advantages of mature technology, high reliability and long service life. The main display device for electronic equipment such as televisions, computer monitors, and oscilloscopes. According to a conservative estimate, the mass of CRT electronic glass in use in the country is about 6 million tons, and the total lead content is about 500,000 tons. According to the statistics of home appliance trade-in by the Ministry of Commerce, in 2011, about 61.292 million sets of waste home appliances and 51.497 million sets of waste TVs were recycled in 2011. That is to say, 82% of the home appliances recycled in my country are T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B13/00H01J9/50H01M10/54
CPCY02P10/20Y02W30/82Y02W30/84
Inventor 李金惠李富元谢芳芳周锋
Owner 湖北金洋冶金股份有限公司