100ml Tapered / Curve Corundum alumina crucible for sintering

Alumina Ceramic crucibles offer resistance to high temperatures,acid and alkali as a heating elements ceramic, while maintaining good erosion resistance and thermal shock property, used for melting gold and for melting gold and laboratory Chemical experiment.

Product Serial Number:004

Product details:
Alumina oxide crucible has a flat bottom, straight sides. Made in recrystallized Alumina (99.0%).
1.Material: 99.0% purity of Aluminum oxide.
2.Temperature:use temperature is 1600℃ to 1750℃, fire temperatuare is 1800℃.
3.Crucible color: white
4.Crucile shape:Tapered, also called curve,cone-shape or conical corundum crucibles.

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Product Description:

Application:
1. Alumina crucible for sintering are composed of porous fused alumina, with a strong and refractory quality.
2. It is suitable for melting samples with anhydrous Na2CO3 and other weak alkaline substances as flux, while it is not suitable for melting samples with Na2O2,NaOH and other strong alkaline substances and acidic substances as flux (such as K2S2O7).
3. Characteristics of corundum crucible: resistant to high temperature, acid and alkali, cold and heat, and chemical corrosion.
4. Shape of corundum crucible: arc, cylindrical.
5.They are commonly used in a variety of metal or non-metal melting material, or melting items analysis in the lab, also it’s a regular application for smelting & sintering for phosphors, rare earth material, precious metals.

How to clean Al2O3 crucibles?
Alumina crucible is belong to fragile consumanbles, but if use well, alumina crucible can also be reused. Some customers found residues after using several times, you can consider the following method according to the specific situation,we hope to help you.
1. Acid bubble: usually with nitric acid for a long time, then water cleaning;
2. After drying, slow temperature rise to 800 ℃ in the high temperature furnace for 6 hours (note: very full temperature rise is required for baking).

Product Size:

Size of Cone-shape Aluminum Oxide Crucibles
Code	Capacity （ml）	Up Outer Dia.（mm）	Bottom Outer Dia.（mm）	Height （mm）
BC100	3	17	11	25
BC111	3	20	16	17
BC101	4	22	14	24
BC112	4	25	19	18
BC113	5	26	18	21
BC102	10	28	20	32
BC114	10	30	20	28
BC131	10	30	14	32
BC103	15	31	21	35
BC104	20	34	24	39
BC115	15	35	21	30
BC105	30	37	24	45
BC116	20	38	24	35
BC117	25	39	24	38
BC132	20	39	21	35
BC118	30	45	27	39
BC133	30	45	23	38
BC119	40	46	30	40
BC106	50	50	30	54
BC120	50	50	30	48
BC121	70	56	35	56
BC134	50	57	28	44
BC122	100	61	31	60
BC107	120	63	33	73
BC108	150	67	41	80
BC135	100	67	34	53
BC123	150	73	43	67
BC136	150	73	42	58
BC109	400	75	56	122
BC124	200	82	43	70
BC137	250	84	48	66
BC110	500	86	50	140
BC126	300	88	53	85
BC125	250	90	53	76
BC128	600	100	65	128
BC127	500	108	62	108
BC138	500	108	58	108
BC561	750	113	73	140
BC562	750	100	60	160
BC129	800	113	62	140
BC563	1000	125	75	145
BC139	1200	140	90	116
BC564	1250	130	85	145
BC130	1300	135	83	150
BC565	1500	130	85	150

Tips: size of alumina crucible for glass melting is being updated continuously. If cannot find your need size in above list, please contact us directly.

Physical and chemical property Sheet of alumina crucible industries
Technical characteristic	Numerical value
Alumina content	99% ~ 99.5% alumina
Silicon dioxide content	＜0.2
Usage temperature	Long time in 1600℃
Moh’s hardness	8 ~9
Volume density	slip casting：3.7~3.9
	mechanism of forming: none
	hot briquetting: 3.7~3.85
Water absorption	＜0.1~0.2
Normal temperature flexural strength	slip casting：200 2000kg/cm2
Normal temperature flexural strength	hot briquetting：150 1500kg/cm2