Size-graded ternary batch for bonded basic refractory shapes

Details Size-graded ternary batch for bonded basic refractory shapes Size-graded ternary batch for bonded basic refractory shapes

1974-06-17

1976-02-24

Poer, J.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 63, C04B 3504

Patent

active

039402797

ABSTRACT:
A refractory of fused or dead-burned dolomitic grain bonded with fine magnesite. The dolomitic grain is divided into one coarse and one intermediate particle size fraction in the batch, while the magnesite is alone in the fine fraction. The fine, intermediate and coarse fractions are separated by large discrete gaps in the size distribution of particles resulting in a burned refractory of high hot strength and corrosion resistance to slags in basic oxygen furnaces. The width of each large gap in the particle size distribution is at least equivalent to the gap created by removing from a ground raw material batch, with a continuous particle size distribution, the particles retained on at least three consecutive primary Tyler sieves after screening (sizing) the batch.

REFERENCES:
patent: 2572688 (1951-10-01), Austin
patent: 3141784 (1964-07-01), King et al.
patent: 3262795 (1966-07-01), Davies et al.

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