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Waste color picture tube glass anti-radiation ceramsite and preparation method thereof

A color picture tube and anti-radiation technology, which is applied in the production of clay products, other household utensils, ceramic materials, etc., can solve the problems of difficult pumping construction of anti-radiation concrete, achieve high chemical stability and use safety, and realize harmless efficient disposal and low cost

Inactive Publication Date: 2015-04-08
YANCHENG INST OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the multi-angular and multi-needle flakes of natural mineral anti-radiation aggregates, the prepared anti-radiation concrete is not easy to pump for construction

Method used

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  • Waste color picture tube glass anti-radiation ceramsite and preparation method thereof
  • Waste color picture tube glass anti-radiation ceramsite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) 100 parts by weight of CRT glass and 1.5 parts by weight of carboxymethyl cellulose as a granulation aid are dropped into a ball mill for dry ball milling; then cross 80 mesh sieves to form a batch;

[0026] (2) Spray water and humidify the batch materials, mix them evenly, put them into a granulator, and granulate to obtain raw meal balls with a particle size of 4mm or 10-60mm;

[0027] (3) Put the raw meal balls in the natural environment or use the waste heat of the exhaust gas of the rotary kiln to dry until the moisture content is ≤5%;

[0028] (4) Send the dried raw meal balls into the rotary kiln, raise the temperature at a rate of 10 °C / min to 500 °C and roast for 100 minutes, then increase the rate of temperature at 10 °C / min to 980 °C and keep it for 230 minutes , for mineralization; then exit the kiln at a cooling rate of 100°C / min and cool to below 100°C to obtain radiation-proof ceramsite. Its product performance: the density is 3.0g / cm 3 The water ab...

Embodiment 2

[0030] (1) 100 parts by weight of screen glass and 5 parts by weight of starch glue as a granulation aid are dropped into a ball mill for dry ball milling; then pass through a 100-mesh sieve to form a batch;

[0031] (2) Spray water and humidify the batch materials, mix them evenly, put them into a granulator, and granulate to obtain raw meal balls with a particle size of 10mm or 10-60mm;

[0032] (3) Put the raw meal balls in the natural environment or use the waste heat of the exhaust gas of the rotary kiln to dry until the moisture content is ≤5%;

[0033] (4) Send the dried raw meal balls into the rotary kiln, raise the temperature at a rate of 20 °C / min to 600 °C and roast for 30 minutes, then increase the rate of temperature at 20 °C / min to 680 °C and keep it for 30 minutes , for mineralization; then exit the kiln at a cooling rate of 80°C / min and cool to below 100°C to obtain radiation-proof ceramsite. Its product performance: the density is 2.84g / cm 3 The water absor...

Embodiment 3

[0034] Embodiment 3: (1) put 100 parts by weight of conical neck glass and 15 parts by weight of polyvinyl alcohol as a granulation aid into a ball mill, and carry out dry ball milling; then pass through a 200-mesh sieve to form a batch;

[0035] (2) Spray water and humidify the batch materials, mix them evenly, put them into a granulator, and granulate to obtain raw meal balls with a particle size of 10mm or 10-60mm;

[0036] (3) Put the raw meal balls in the natural environment or use the waste heat of the exhaust gas of the rotary kiln to dry until the moisture content is ≤5%;

[0037](4) Send the dried raw meal balls into the rotary kiln, raise the temperature at a rate of 30 °C / min to 600 °C and roast for 50 minutes, then increase the rate of temperature at 40 °C / min to 880 °C and keep it for 230 minutes , for mineralization; then exit the kiln at a cooling rate of 20°C / min and cool to below 100°C to obtain radiation-proof ceramsite. Its product performance: the density ...

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Abstract

The invention provides a waste color picture tube glass anti-radiation ceramsite and a preparation method thereof. The waste color picture tube glass anti-radiation ceramsite comprises the components in parts by weight as follows: 100 parts of CRT (cathode ray tube) glass or screen glass and cone neck glass, 0-150 parts of strengthening ingredients and 1-15 parts of granulation additives. The preparation method comprises the steps that waste color picture tube glass or the screen glass and the cone neck glass are subjected to coarse crushing, ground together with the auxiliary ingredients and the granulation additives according to the weight parts of a ratio, and granulated to be raw material nodules; and the raw material nodules are dried, subjected to calcination and mineralization and cooled to prepare the anti-radiation ceramsite. The anti-radiation ceramsite of the waste color picture tube glass and the preparation method thereof have the advantages that the waste color picture tube glass is utilized as a raw material for producing the anti-radiation ceramiste, and the waste color picture tube glass is changed into a resource, transmitted to be high performance anti-radiation ceramiste and taken as an aggregate to be applied to the preparation of anti-radiation concrete; and the anti-radiation ceramsite is excellent in protection performance and low in preparation cost, and the harmless treatment and recycle and high-valued utilization of the waste color picture tube glass can be realized.

Description

technical field [0001] The invention relates to aggregates for concrete and a preparation method thereof, in particular to radiation-proof ceramsite for waste color picture tube glass and a preparation method thereof, belonging to the technical field of ionizing radiation-proof building materials. Background technique [0002] The color picture tube of electronic products such as color television and desktop computer is an aggregate of glassy screen, cone, neck and molten solder, wherein, the screen contains 8-12% barium oxide and 8-12% strontium oxide, and the screen's The inner surface is also coated with a fluorescent powder mixture containing heavy metals such as lead oxide and cadmium; the cone contains 20-26% lead oxide, and the inner and outer surfaces of the cone are respectively coated with graphite and ferric oxide; The neck contains 40% lead oxide; the molten solder (sealed screen tube, pipe cone) contains up to 40%-50% lead oxide and zinc borate. They account fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/02
CPCY02P40/60
Inventor 程俊华张健程俊静徐新民陈刚陈汝祝陈华王沛钊
Owner YANCHENG INST OF TECH
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