公开(公告)号：US3788866A

公开(公告)日：1974-01-29

申请号：US3788866D

申请日：1972-10-02

Applicant: ELKEM AS

Inventor： FLOOD H ,  SELTVEIT A

IPC: C04B35/14

CPC classification number: C04B35/14

Abstract: A METHOD OF PRODUCING SILICA REFRACTORY MATERIALS IS DISCLOSED. FINELY DIVIDED SILICA IS ADMIXED WITH WATER AND THEN LIME IS ADDED TO THE MIXTURE. THEREAFTER A PROPER AMMONIUM COMPOUND IS ADDED TO PRECIPITAT CALCIUM AS A COMPOUND INSOLUBLE IN WATER AFTER WHICH THE PRODUCT IS BAKED PREFERABLY FIRST AT A LOW TEMPERATURE FOR A RELATIVELY LONG PERIOD OF TIME AND THEN AT A HIGH TEMPERATURE FOR A SHORTER PERIOD OF TIME.

公开(公告)号：US3832434A

公开(公告)日：1974-08-27

申请号：US29427472

申请日：1972-10-02

Applicant: ELKEM AS

Inventor： FLOOD H ,  SELTVEIT A

IPC: B01J2/00 ,  C01B33/12 ,  C04B35/14 ,  C09C1/30

CPC classification number: C09C1/3036 ,  B01J2/00 ,  C01B33/12 ,  C01P2004/50 ,  C04B35/14

Abstract: A method of treating colloidal silicon dioxide dust is disclosed. The dust is admixed with water to form a nodulized product thereby reducing the problems normally encountered in connection with transportation and handling of silica-dust.

Abstract translation: 公开了一种处理胶态二氧化硅粉尘的方法。 灰尘与水混合形成结节状的产品，从而减少与二氧化硅粉尘的运输和处理相关的常见问题。