Black ceramic plate prepared by natural minerals and extracted vanadium tailings and preparation method of black ceramic plate
A technology for extracting vanadium tailings and natural minerals, applied in the field of building decoration materials, can solve problems such as energy consumption, and achieve the effects of eliminating pollution, reducing costs and reducing demand
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[0021] A method for preparing a black ceramic plate prepared by utilizing natural minerals and vanadium extraction tailings, comprising the following steps:
[0022] (1) 0~10% vanadium extraction tailings, 0~10% chromite, 0~10% manganese oxide ore are dried, dehydrated, crushed and screened to form mixed powder;
[0023] (2) Mix the above powder with 58~65% clay, 9~20% feldspar, 5~10% sand, and 1~3% additives to make a moisture content of 14%~19% The clay mass is formed by dry pressing or wet extrusion;
[0024] (3) Dry the formed body in a production line drying kiln at a drying temperature of ≦150 °C, and sinter at a temperature of 1000-1200 °C after drying to prepare a black ceramic plate.
[0025] Preferably, the vanadium extraction tailings are treated so that the moisture content is less than or equal to 2% and the average particle size is D. 50 Powders smaller than 147 μm.
[0026] Preferably, the chromite and manganese oxide ore are treated so that the moisture cont...
Example Embodiment
[0028] Example 1:
[0029] First, take some chromite for crushing and sieving, and process the chromite into powder with a moisture content of ≦1% and an average particle size of less than 43 μm. The chromite powder and clay, feldspar, and sand are weighed according to the ratio of Example 1 in Table 1, and are dispersed by a mixer and a mud mixer to make a mud mass with a moisture content of 14%-19%. , and then made into a 300 × 120 × 18 mm clay plate with an extrusion molding machine. After molding, it is put into the five-layer drying kiln of the production line for drying (drying cycle is 300 min, the maximum temperature is less than or equal to 150 ℃). The drying moisture of the product after leaving the drying kiln is <1 %. The sintering of the clay slabs was completed in a roller kiln with a cycle of 255 min. Based on the same preparation method, the physical properties and cost of the sintered mineral-colored black clay board and the traditional building clay board ...
Example Embodiment
[0030] Implementation two:
[0031] First, take some vanadium extraction tailings for drying, dehydration, crushing and sieving, and then process the vanadium extraction tailings into powders with a moisture content of ≤ 2 % and an average particle size of less than 147 μm; take some chromite for crushing and screening Sieve treatment, the chromite is treated into powder with a moisture content of less than 1% and an average particle size of less than 43 μm. The vanadium extraction tailings, chromite powder, clay, feldspar, and sand were weighed according to the proportions of Example 2 in Table 1, and were dispersed by a mixer and a mud mixer to make the water content 14%. -19% clay mass, then made into 300×120×18 mm terracotta plate with extruder. After molding, it is put into the five-layer drying kiln of the production line for drying (drying cycle is 300 min, and the maximum temperature is 150 °C). The sintering of the clay slabs was completed in a roller kiln with a ...
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