High-calcium pre-molten slag modification aluminium slag ball and preparation method thereof
A technology of pre-melted slag and aluminum slag balls, which is applied in the field of high-calcium pre-melted slag modified aluminum slag balls and its preparation, can solve the problems of polluted molten steel, high aluminum-calcium ratio, and low CaO content, so as to reduce the aluminum-calcium ratio , reduced oxygen content, improved fluidity
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[0020] The preparation method of the above-mentioned high-calcium pre-melted slag modified aluminum slag ball is as follows:
[0021] 1) Preparation of pre-slag: Limestone powder, calcium oxide, bauxite powder, iron red and magnesia powder after sampling and analysis are qualified according to the weight ratio of 30~50:10~30:20~40:5~10:1 Weigh and mix at a ratio of ~3 to obtain a mixed material, then add 1 to 10% of the weight of the mixed material and pulp waste liquid with a concentration of 30% and stir evenly, press it into a spherical or block material, and then put it into Melt in the furnace, and after cooling out of the furnace, process according to the required particle size to obtain pre-melted slag;
[0022] 2) Preparation of high-calcium pre-melted slag modified aluminum slag balls: the metal aluminum with a weight percentage of 40-47 and the above-mentioned pre-melted slag with a weight percentage of 53-60 are weighed and mixed to obtain a mixture, and the above-m...
Embodiment 1
[0024] A high-calcium pre-melted slag modified aluminum slag ball, which contains metal aluminum (Al), calcium oxide (CaO), aluminum oxide (Al 2 o 3 ), silicon dioxide (SiO 2 ), magnesium oxide (MgO), a small amount of water (H 2 O) and unavoidable other impurities, its component content by weight percentage is: metal aluminum 46, calcium oxide 30, aluminum oxide 14, silicon dioxide 5, magnesium oxide 4, moisture 0.26, other substances balance .
[0025] The specific technological process of the preparation method of the above-mentioned high-calcium pre-melted slag modified aluminum slag ball is as follows:
[0026] 1) Raw material sampling analysis and material preparation:
[0027] The content by weight percentage of the chemical composition of each raw material is respectively:
[0028] Metal aluminum: Al≥95%, Si≤4%;
[0029] Limestone powder: CaCO 3 ≥95%, SiO 2 ≤5%;
[0030] Calcium oxide: CaO≥97%, SiO 2 ≤2%;
[0031] Bauxite powder: Al 2 o 3 ≥80%, SiO 2 ≤15%...
Embodiment 2
[0048] A high-calcium pre-melted slag modified aluminum slag ball, which contains metal aluminum (Al), calcium oxide (CaO), aluminum oxide (Al 2 o 3 ), silicon dioxide (SiO 2 ), magnesium oxide (MgO), a small amount of water (H 2 O) and unavoidable other impurities, its component content by weight percentage is: metal aluminum 42, calcium oxide 33, aluminum oxide 15, silicon dioxide 4, magnesium oxide 5, moisture 0.3, and the balance of other substances .
[0049] The specific technological process of the preparation method of the above-mentioned high-calcium pre-melted slag modified aluminum slag ball is as follows:
[0050] 1) Raw material sampling analysis and material preparation:
[0051] The content by weight percentage of the chemical composition of each raw material is respectively:
[0052] Metal aluminum: Al≥95%, Si≤4%;
[0053] Limestone powder: CaCO 3 ≥95%, SiO 2 ≤5%;
[0054] Calcium oxide: CaO≥97%, SiO 2 ≤2%;
[0055] Bauxite powder: Al 2 o 3 ≥80%, S...
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