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A kind of lead-zinc smelting smoked slag-based building ceramsite and preparation method thereof
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A technology of smelting slag and slag, which is applied in the field of lead-zinc smelting fuming slag-based building ceramsite and its preparation, which achieves the effects of low cost, simple and easy preparation method, good economic and social benefits
Active Publication Date: 2019-10-22
JIANGXI UNIV OF SCI & TECH +1
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[0005] The invention provides a lead-zinc smelting fuming furnace slag-based building ceramsite and its preparation method, which mainly solves the harmless treatment and resource utilization of lead-zinc smelting fuming furnace slag
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Embodiment 1
[0020] The main components of fuming slag from a lead-zinc smelting company are as follows.
[0021] Element SiO 2
Fe Zn Cu CaO Content (wt.%) 23.5 28.2 0.6 0.24 27.5
[0022] Drying and grinding the lead-zinc smelting fuming furnace slag into dry powder with a particle size of less than 75 microns.
[0023] The main components of cobalt smelting slag in a certain place are as follows.
[0024] Element SiO 2
Fe co al 2 o 3
CaO Na 2 o
Content (wt.%) 63.5 4.1 0.3 7.1 8.3 0.3
[0025] The cobalt smelting slag is dried and ground into dry powder with a particle size of less than 75 microns.
[0026] Sodium silicate is used as an additive, dried and ground into a dry powder with a particle size of less than 75 microns.
[0027] According to the raw material ratio of 65% lead-zinc smelting fuming furnace slag, 28% cobalt smelting slag, and 7% sodium silicate, the above-mentioned powders were we...
Embodiment 2
[0034] The main components of fuming slag from a lead-zinc smelting company are as follows.
[0035] Element SiO 2
[0036] Drying and grinding the lead-zinc smelting fuming furnace slag into dry powder with a particle size of less than 75 microns.
[0037] The main components of cobalt smelting slag in a certain place are as follows.
[0038] Element SiO 2
[0039] Cobalt smelting slag is dried and ground into dry powder with a particle size of less than 75 microns.
[0040] Sodium silicate is used as an additive, dried and ground into a dry powder with a particle size of less than 75 microns.
[0041] According to the raw material ratio of 70% lead-zinc smelting fuming furnace slag, 24% cobalt smelting slag, and 6% sodium silicate, the above powders were weighed, mixed and stirred evenly, and ceramsite powder was obtained.
[0042] The ceramsite powder is sent to a ball granulator for granulation and molding to obtain a ceramsite blank.
[0043] ...
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Abstract
The invention discloses a lead zinc smelting fuming furnace slag-based building ceramsite, and a preparation method thereof, and belongs to the technical field of smelting slag resource utilization and harmlessness treatment. The raw materials of the lead zinc smelting fuming furnace slag-based building ceramsite comprise lead zinc smelting fuming furnace slag, cobalt smelting slag, and an additive. The preparation method comprises following steps: lead zinc smelting fuming furnace slag, cobalt smelting slag, and the additive are dried and smashed into dry powder respectively; the obtained lead zinc smelting fuming furnace slag powder, the obtained cobalt smelting slag powder, and the obtained additive powder are uniformly mixed, and are delivered into a pelletizer for pelletizing moulding; and a ceramsite finished product is obtained via drying and calcining. The preparation method is capable of realizing resource utilization of lead zinc smelting fuming furnace slag and cobalt smelting slag, and possesses excellent economic and social benefit.
Description
technical field [0001] The invention relates to the technical field of resource utilization and harmless treatment of smelting slag, in particular to building ceramsite based on lead-zinc smelting fuming furnace slag and a preparation method thereof. Background technique [0002] Non-ferrous metal pyro-smelting soot often contains lead and zinc and other low-boiling-point metal components. In industry, fuming furnaces are generally used for recovery, and this process will produce a large amount of fuming slag. At present, most of the fuming slag produced is landfilled or stockpiled. On the one hand, it takes up a lot of space. On the other hand, because the fuming slag of lead-zinc smelting contains active heavy metal components, if it is not properly managed, it will easily cause environmental pollution. Lead-zinc smelting fuming slag is mainly composed of silicon dioxide, iron oxide and calcium oxide. Currently, the treatment of lead-zinc smelting fuming slag is mainly sto...
Claims
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