Acidic full-vanadium-titanium pellets and preparation method thereof
A technology of pelletizing and vanadium-titanium magnetite concentrate, which is applied in the field of metallurgy to achieve the effects of wide application range, reduced coke ratio, and improved technical and economic indicators
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preparation example Construction
[0015] The preparation method of the acidic all-vanadium-titanium pellets of the present invention comprises the following steps: batching, mixing, drying, moistening, grinding, pelletizing, drying, preheating, roasting, cooling, and sieving; after sieving, blast furnace smelting can be carried out.
[0016] The pellet raw material of the present invention is mainly composed of all-vanadium-titanium magnetite concentrate, and the ratio can be as high as 100%, and a small amount of binder such as bentonite is added to pelletize and roast to prepare finished pellets. The composition content of the used all-vanadium titanium magnetite concentrate is calculated as: Fe 2 o 3 : 40-50%, FeO: 29-33%, SiO 2 : 2.5-4.5%, CaO: 1.5-2.2%, MgO: 2.0-3.2%, Al 2 o 3 : 3.0-4.5%, V 2 o 5 : 0.55-0.65%, TiO 2 : 10-15%, S: 0.4-0.6%, P0.001-0.003%, of which TFe: 52-58%, TFe is Fe in ore 2 o 3 The total amount of iron element with FeO.
[0017] The unique design concept of the present inventi...
Embodiment 1
[0025] This example was prepared in the laboratory. In order to compare with the existing pellets of vanadium-titanium magnetite concentrate + ordinary concentrate, two experiments were carried out in this embodiment, and the binder used was bentonite. Table 1 is the raw material composition of the used vanadium-titanium magnetite concentrate, wherein, V 2 o 5 0.65%, TiO 2 was 11.16%.
[0026] Table 1 raw material composition (%)
[0027] raw material name
TF
Fe 2 o 3
FeO
SiO 2
CaO
MgO
Al 2 o 3
S
P
Ordinary concentrate
63.25
61.38
26.12
5.47
1.23
0.90
1.00
0.324
0.035
Vanadium Titanium Magnetite Concentrate
55.56
46.39
29.72
3.35
1.92
2.56
3.31
0.441
0.002
[0028] Table 2 Ingredients scheme (%)
[0029]
[0030] Take 5 kg of vanadium-titanium magnetite concentrate raw material according to the above-men...
Embodiment 2
[0036] This embodiment is the acidic all-vanadium-titanium pellets produced in actual industry. The composition of the vanadium-titanium magnetite concentrate used is shown in Table 4.
[0037] Table 4 raw material composition (%)
[0038] raw material name
TF
Fe 2 o 3
FeO
SiO 2
CaO
MgO
Al 2 o 3
V 2 o 5
TiO 2
S
P
Vanadium Titanium Magnetite Concentrate
56.5
48.5
31
2.55
1.55
2.84
3.65
0.65
10.5
0.41
0.001
[0039] The main equipment is a grate machine-rotary kiln, which produces qualified pellets through batching, mixing, pelletizing, preheating-roasting and other processes.
[0040] A, the proportioning of the all-vanadium-titanium magnetite concentrate of the above-mentioned table 2 content is 100%, is mixed and dried with 1.5% external bentonite, the moisture of the dry mixture is 6.5%, and its natural alkalinity is detected to be 0.26...
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Abstract
Description
Claims
Application Information
- IPC
- C22B1/243
- Inventors
- 蒋大均; 何木光