Research and Application of Corundum Based Self-Flowing Castable Refractories

2013 ◽  
Vol 690-693 ◽  
pp. 877-880
Author(s):  
Jun Cong Wei ◽  
Shu Xian Liu ◽  
Hui Min Zhang ◽  
Li Xue Yu ◽  
Jun Bo Tu
Keyword(s):  
Service Life ◽  
Flow Characteristics ◽  
The Self ◽  
Sodium Hexametaphosphate ◽  
High Alumina ◽  
Alumina Powder ◽  
Fume Silica ◽  
Alumina Cement ◽  
High Alumina Cement ◽  
Suitable Amount

The effects of different deflocculants, fume silica, reactive micro-alumina powder and high alumina cement on the flowability of corundum based self-flowing castables were investigated using brown corundum as the main starting materials. The behavior of the castables was evaluated according to the self-flow value of the castables. The results showed that the best self-flow characteristics of corundum based self-flowing castables is obtained using sodium hexametaphosphate as deflocculant, suitable amount of alumina micropowder, fume silica, and high alumina cement as binders. The resultant castables were successfully used in the bottom of a refining ladle with capacity of 80 tons. The service life could match that of well blocks and meet the production requirements.

Preliminary Experimental Study on Self-Leveling Ground Mortar

2013 ◽  
Vol 357-360 ◽  
pp. 689-693 ◽  
Author(s):  
Dong Mei Zhang ◽  
Ming Shi Lu
Keyword(s):  
Experimental Study ◽  
Calcium Carbonate ◽  
The Self ◽  
High Alumina ◽  
Alumina Cement ◽  
High Alumina Cement ◽  
Different Content ◽  
Fineness Modulus

The effects of the different content of cement-sand ratio,fineness modulus of sand, heavy calcium carbonate and high alumina cement on the self-leveling mortar was studied according to orthogonal experiment.The results show that when cement-sand ratio is 1.33,fineness modulus of sand is 2.2,heavy alumina is 20%,alumina cement is 10%,the mix amount of mortar is optimum.It can get a good performance of self-leveling mortar.

The conversion of high alumina cement

1975 ◽  
Vol 27 (91) ◽  
pp. 59-77 ◽  
Author(s):  
H. G. Midgley ◽  
Ann Midgley
Keyword(s):  
High Alumina ◽  
Alumina Cement ◽  
High Alumina Cement

Production of high-alumina cement clinker by fusion in an electric furnace

Refractories ◽  
1984 ◽  
Vol 25 (5-6) ◽  
pp. 293-296 ◽  
Author(s):  
I. N. Sorokin ◽  
T. M. Golovina ◽  
D. S. Rutman ◽  
A. D. Popov ◽  
V. M. Ust'yantsev ◽  
...  
Keyword(s):  
Electric Furnace ◽  
Cement Clinker ◽  
High Alumina ◽  
Alumina Cement ◽  
High Alumina Cement

Physical and chemical characteristics of heat resistant materials based on high alumina cement

2021 ◽  
Author(s):  
Dana Koňáková ◽  
Eva Vejmelková ◽  
Vojtěch Pommer ◽  
Martin Keppert ◽  
Anton Trník ◽  
...  
Keyword(s):  
High Alumina ◽  
Chemical Characteristics ◽  
Alumina Cement ◽  
High Alumina Cement ◽  
Physical And Chemical Characteristics ◽  
Heat Resistant ◽  
Physical And Chemical

Measurement of high-alumina cement-calcium carbonate reactions using DTA

Clay Minerals ◽  
1984 ◽  
Vol 19 (5) ◽  
pp. 857-864 ◽  
Author(s):  
H. G. Midgley
Keyword(s):  
Compressive Strength ◽  
Calcium Carbonate ◽  
High Alumina ◽  
Curing Time ◽  
Lower Strength ◽  
Alumina Cement ◽  
High Alumina Cement ◽  
Strength Tests ◽  
The Stability

AbstractHydrating high-alumina cement will react with calcium carbonate to form the complex mineral calcium carboaluminate hydrate, 3CaO.Al2O3.CaCO3.12H2O. This mineral is reported to be capable of providing strength in concrete and so may provide an alternative to the minerals normally found in the hydration of high-alumina cement, which may under certain conditions convert to other minerals with a loss in strength. Some doubt has been cast on the stability of calcium carboaluminate hydrate and it has been found that in hydrated high-alumina cement, calcium carboaluminate hydrate decomposes at temperatures in excess of 60°C. Cube compressive strength tests on high-alumina cement and high-alumina cement-calcium carbonate pastes have shown that the latter have a lower strength than pastes made with high-alumina cement alone. When cured at 50°C the high-alumina cement-calcium carbonate pastes show a loss in strength with curing time. Cements made with the high-alumina cement-calcium carbonate mixture always have a lower strength than those made with high-alumina cement alone and so no advantage is gained from their use.

Production of high-alumina cement by sintering

Refractories ◽  
1985 ◽  
Vol 26 (1-2) ◽  
pp. 92-93
Author(s):  
A. N. Sokolov ◽  
R. M. Shumeiko ◽  
L. M. Myznikova ◽  
P. D. Orekhov ◽  
L. A. Krasnitskaya
Keyword(s):  
High Alumina ◽  
Alumina Cement ◽  
High Alumina Cement
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