公开(公告)号：AT273780B

公开(公告)日：1969-08-25

申请号：AT622066

申请日：1966-06-29

Applicant: HARBISON WALKER REFRACTORIES

Inventor： MILLER ELDON D

IPC: C04B35/10 ,  C04B35/101

Abstract: A refractory batch comprises: (i) 45-75% by weight high alumina refractory material analysing as at least 50% Al2O3; (ii) 10-30% amorphous SiO2 (+ 65 mesh, Tyler); (iii) 5-15% -65 mesh ball clay plasticizer; (iv) the remainder being finely divided calcined Al2O3, the total of (i) and (ii) forming 75-85% of the batch which has a sizing such that: (a) 50-70% of the batch is + 65 mesh; (b) 25-35% of the + 65 fraction is -3 + 10 mesh; (c) at least 70% of the -65 fraction is -150 mesh; (d) at least 10% of the total batch is -325 mesh and this portion comprises substantially equal amounts of calcined alumina and ball clay. Fired refractory shapes, e.g. conduits, may be formed by adding to a refractory batch of the invention a mixture of 6-10% of a tempering liquid (e.g. water) and 0.1-0.3% dispersant (e.g. sodium phosphates), casting in a mould, and firing e.g. to about 2000 DEG F. In comparative Examples II-V the amorphous SiO2 is replaced by zircon and silicon carbide.

公开(公告)号：GB1122888A

公开(公告)日：1968-08-07

申请号：GB2374167

申请日：1967-05-22

Applicant: HARBISON WALKER REFRACTORIES

Inventor： MCCREIGHT DONALD O ,  MILLER ELDON D ,  PAVLICA STANLEY R

IPC: C04B35/10

Abstract: A batch comprising, by weight, 40-80% fused alumina grain, 59-5% non-fused high alumina refractory material, and 1-15% waterinsoluble, pure Cr2O3, substantially all the discrete particles of the batch being of uniform size and averaging less than 1 m diameter, and the fused Al2O3 containing 0.5-5% TiO2, is formed into a shape and fired to give a ceramically bonded refractory shape containing at least 80% Al2O3, less than 3% SiO2 and less than 2% Fe2O3. Preferably, the fused grain is substantially all + 65 mesh (Tyler), the remainder of the batch being finely divided Cr2O3 and - 65 mesh tabular alumina and/or calcined Bayer process alumina.

公开(公告)号：CA762987A

公开(公告)日：1967-07-11

申请号：CA762987D

Applicant: HARBISON WALKER REFRACTORIES

Inventor： MILLER ELDON D