Method for producing foamed glass by melting blast furnace slag
A technology of foamed glass and blast furnace slag, which is applied in the field of blast furnace slag recycling, can solve the problems of labor-consuming, high production cost, high energy consumption, etc., and achieve the effects of fine and uniform pores, reduced production cost, and large adsorption capacity
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Embodiment 1
[0023] A method for producing foamed glass by melting blast furnace slag, comprising the steps of:
[0024] 1) Accurately weigh 70 parts of glass powder by mass, 0.1 part of foaming agent, 0.2 part of foam stabilizer, and 0.1 part of fluxing agent, and mix each component evenly to obtain the initial raw material of foamed glass;
[0025] 2) Take 29 parts of molten blast furnace slag from the blast furnace slag outlet in the heating furnace, spray it into the heating furnace and keep it for 8 minutes; then adjust the temperature in the heating furnace to 1000°C and keep it for 15 minutes; The sintered expanded foamed heating material is obtained through foaming and annealing in sequence;
[0026] 3) Take the sintered expanded foam heating material obtained in step 2) out of the heating furnace and cool it naturally to obtain a bulk density of 300kg / m 3 , Water absorption rate of 110%, foamed glass with a pore size of 25 μm.
[0027] In the above steps, the blast furnace slag ...
Embodiment 2
[0030] A method for producing foamed glass by melting blast furnace slag, comprising the steps of:
[0031] 1) Accurately weigh 29 parts of glass powder by mass, 3.9 parts of foaming agent, 0.3 part of foam stabilizer, and 0.8 part of fluxing agent, and mix each component evenly to obtain the initial raw material of foamed glass;
[0032] 2) Take 70 parts of molten blast furnace slag from the slag outlet of the blast furnace into the heating furnace, and spray the primary raw material of foamed glass obtained in step 1) into the heating furnace, keep it warm for 7 minutes; then adjust the temperature in the heating furnace to 950°C , keep warm for 20min; make the foamed glass raw material sequentially foamed and annealed in the heating furnace to obtain the sintered expanded foamed heating material;
[0033] 3) Take the sintered expanded foam heating material obtained in step 2) out of the heating furnace and cool it naturally to obtain a bulk density of 500kg / m 3 , Water abs...
Embodiment 3
[0037] A method for producing foamed glass by melting blast furnace slag, comprising the steps of:
[0038] 1) Accurately weigh 40 parts of glass powder by mass, 3.5 parts of foaming agent, 0.5 part of foam stabilizer, and 0.6 part of fluxing agent, and mix each component evenly to obtain the initial raw material of foamed glass;
[0039] 2) Take 59 parts of molten blast furnace slag from the blast furnace slag outlet in the heating furnace and spray the foamed glass raw material obtained in step 1) into the heating furnace and keep it warm for 10 minutes; then adjust the temperature in the heating furnace to 1000°C , keep warm for 12 minutes; make the foamed glass raw material sequentially foamed and annealed in the heating furnace to obtain a sintered expanded foamed heating material;
[0040] 3) Take the sintered expanded foam heating material obtained in step 2) out of the heating furnace and cool it naturally to obtain a bulk density of 800kg / m 3 , Water absorption rate ...
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