Alumina ceramic crucibles, usually, we call crucibles with more than 95% alumina content as corundum crucibles. Alumina ceramic crucibles and corundum ceramic crucibles include: arc alumina crucibles, square alumina crucibles, rectangular alumina ceramics crucibles, cylindrical ceramic crucibles, and various special-shaped alumina ceramics crucibles. We undertake all kinds of non-standard and special-shaped alumina corundum ceramic crucibles, please contact us! Corundum ceramic crucible series: suitable for various laboratory metal and non-metal sample analysis, and various industrial analysis.
Alumina Ceramic Crucibles and Corundum Ceramic Crucibles
Alumina ceramic crucibles, usually, we call crucibles with more than 95% alumina content corundum crucibles.
Alumina ceramic crucibles and corundum ceramic crucibles include arc alumina crucibles, square alumina crucibles, rectangular alumina ceramics crucibles, cylindrical ceramic crucibles, and various special-shaped alumina ceramics crucibles. We undertake all kinds of non-standard and special-shaped alumina corundum ceramic crucibles, please contact us! Corundum ceramic crucible series: suitable for various laboratory metal and non-metal sample analyses, and various industrial analyses.
Characteristics of alumina/corundum porcelain crucible
High purity: Al2O3>99%, good chemical resistance
Good temperature resistance, long-term use at 1600℃, short-term use at 1800℃
Good resistance to rapid cold and heat, not easy to burst
The high density of grouting molding, high purity alumina crucible, 99% alumina content
Used for evaporation, concentration, or crystallization of solutions, and also for burning solid substances
The Basic Process Of Alumina/Corundum Crucible
At present, our factory’s alumina crucibles with a capacity of 50KG-1000KG are all made in the form of pouring. The main material of the corundum crucible is neutral refractory corundum mullite. The corundum crucible is usually used at a temperature of 1600 degrees. 1. Open the mold according to the size of the drawing 2. Fully mix the aggregate and fine powder according to the formula 3. The slurry is poured into the mold and placed on a horizontal vibrating device to vibrate densely 4. Take off the outer mold after standing still for a period of time, and make it smooth by hand 5. Take off the inner mold and decorate the heart by hand 6. After being fully air-dried, it is fired in the kiln. The kiln temperature is based on the actual use temperature, that is to say, the kiln temperature must be higher than the actual use temperature The above are large crucibles, and small cup-shaped crucibles are mainly formed by machine stamping.
The physical and chemical index of corundum crucible
Al2O3≥99 R2O≤0.2 Fe2O3≤0.1 SiO2≤0.2 Volume density (g/cm2) ≥3.80 Porosity (%) <1 Flexural strength (Mpa)> 350 Compressive strength (Mpa)> 12000 Dielectric constant ∑ (1MHz): 2 Maximum operating temperature (℃): 1800
Alumina Ceramic Crucibles Technical Parameters
Volume(ml)
Height(mm)
TopDiameter (mm)
BottomDiameter (mm)
5
25
27
15
8
30
27
15
10
27
28
18
15
30
33
20
20
35
38
20
25
40
40
22
30
42
47
25
50
47
50
30
100
60
65
35
150
65
75
40
200
70
80
40
300
85
90
40
500
122
90
45
950
160
100
60
1000
145
125
70
Corundum Dish
Diameter mm
High mm
Volume ml
75
28
60
80
35
75
100
40
125
110
40
150
127
46
250
143
50
400
160
60
500
190
65
1000
Corundum Ark
Ark No.
Length mm
Width mm
High mm
72-77
73
12
9
88
85
13
10
92
90
14
10
97
93
16
11
Ark Semicircle
Semicircle No.
Length (mm)
Width (mm)
High (mm)
1
240
40
20
2
150
40
20
3
290
40
22
4
50
40
17
Ash Dish
No.
Top Length (mm)
Bottom Length (mm)
Top Width (mm)
Bottom Width (mm)
High (mm)
D-211
45
37
22
13
15
D-212
50
41
27
20
15
D-213
60
53
30
22
15
D-214
80
72
40
32
17
D-215
90
82
60
52
18
D-217
120
108
60
50
18
Cobustion Boat
No.
Length (mm)
High (mm)
Top Length (mm)
Bottom Length (mm)
D-95
72
9
11
6
D-96
77
9
12
7
D-97
88
10
13
8
D-98
95
10
15
9
D-99
97
11
17
10
Evaporating Dish With Handle
No.
Volume (ml)
Top Diameter (mm)
Bottom Diameter (mm)
High (mm)
D-78
30
50
30
30
D-79
40
56
34
32
D-79-1
50
60
36
34
D-80
70
66
40
39
D-81
100
80
52
45
D-82
125
86
53
46
D-83
150
90
54
48
D-84
200
96
56
52
D-85
250
108
65
60
D-85-1
300
110
66
62
D-87
500
132
80
70
D-88
700
140
82
75
D-89
1000
164
100
90
Volatile Determination Crucible
No.
Volume (ml)
Top Diameter (mm)
Bottom Diameter (mm)
High (mm)
D-75
20
32
20
43
D-76
25
37
22
46
D-77
30
40
24
50
Unglazed Crucible
Volume (ml)
Top Diameter (mm)
Bottom Diameter (mm)
High (mm)
5000
165
100
265
1300
140
85
160
1000
135
80
150
750
115
65
150
500
105
65
170
Crucible Shelf
No.
Length (mm)
Width (mm)
High (mm)
Holes
D-900
160
100
40
6
D-901
160
150
40
9
Besides the above products, we also provide low wall crucibles, high wall crucibles, pores of crucibles, tight crucibles, double crucibles, roga crucibles, far infrared carbon crucibles, combustion tubes, tapered tubes, protection tubes, threaded pipes, funnel, mortars, color plate, medicine shovel, clay triangle, acid resistant cylinder, staining VAT, experimental tank, corundum ball mill liner, alumina ceramic balls, corundum mortar, corundum tube, ect.
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