Raw Materials & Fuel Requirement For High Purity Magnesia Calcium Sand with Capacity of 70000 t/a
Date：2021-01-08 Source：zk corp Views:
1. Chemical and Physical Data for Magnesia Calcium Sand
|
Data % |
MgO/% |
CaO/% |
ASF/% |
L.O.l |
Bulk Density |
Anuual Capacity |
|
MCa-55 |
≥38 |
55-57 |
≤1.5 |
≤1.0 |
3.15 |
20000 tons |
|
MCa-30 |
≥65 |
28-32 |
≤2.5 |
≤1.0 |
3.25 |
30000stons |
|
MCa-20 |
≥70 |
18-22 |
≤3.0 |
≤1.0 |
3.25 |
20000 tons |
2.Raw Materials and Fuel
2.1 Raw material
The raw material of one-step calcination product (mca-55) is dolomite raw ore; the raw material of two-step calcination product (MCa-30, MCa-20) is light burned dolomite and light burned magnesium block.
2.1.1 Consumption for raw materials:
The annual demand of dolomite ore in the project is 39971t; the annual demand of light burned magnesium block is 24719t; Annual demand of light burned dolomite: 27874t.
2.1.2 Physical and chemical index of raw material dolomite raw ore (particle size < 60mm)
|
Data % |
MgO/% |
SiO2/% |
CaO/% |
Al2O3/% |
Fe2O3/% |
L.O.l |
|
Limestone |
21.25 |
0.33 |
30.73 |
0.18 |
0.55 |
47.07 |
Physical and chemical indexes of light burned magnesium block (particle size < 60mm)
|
Data % |
MgO/% |
SiO2/% |
CaO/% |
Al2O3/% |
Fe2O3/% |
L.O.l |
|
Light burned magnesium block |
97.61 |
0.277 |
0.989 |
0.066 |
0.451 |
1.20 |
Physical and chemical indexes of light burnt dolomite (particle size < 60mm)
|
Data % |
MgO/% |
SiO2/% |
CaO/% |
Al2O3/% |
Fe2O3/% |
L.O.l |
|
Light burnt dolomite |
43.76 |
0.22 |
54.138 |
0.17 |
0.61 |
1.10 |
2.2 heavy oil is used as fuel for burning in fuel kiln. Heavy oil is designed according to the following indexes:
7 × heavy oil in standard SH / t0356-1996 is selected. Low calorific value: 9767kcal / kg;
Chemical composition: C 84.95%, H 11.96%, O 2.43%, s 0.4%.
3. Plant Composition
The project consists of the following systems:
a) Crushing process
b) Batching and mixing process
c) Fine grinding process
d) Ball pressing process
e) Calcination process
f) Fuel supply system
g) Workshop substation
h) Comprehensive water pump house
i) Compressed air station
j) Diesel power station
k) Waste heat utilization system of kiln tail
l) Kiln tail gas purification facilities
m) Guard house
