公开(公告)号：US3752685A

公开(公告)日：1973-08-14

申请号：US3752685D

申请日：1971-03-02

Applicant: AGENCY IND SCIENCE TECHN

Inventor： HONDA H ,  ISAYAMA Y ,  KIMURA K

IPC: B22D19/14 ,  A63H9/00 ,  C03B19/08 ,  C03C11/00 ,  C04B14/16 ,  C08H17/02 ,  C09C ,  C09D

CPC classification number: C04B14/16 ,  C03C11/002

Abstract: WHEN FINELY DIVIDED SHIRASU (PUMICE EJECTED FROM VOLCANOES AND THE SECONDARY DEPOSIT OF SUCH PUMICE) IS ROASTED AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 800* C., TO ABOUT 1200*C., THE VITREOUS PARTICLES CONTAINED IN SAID SHIRASU FOAM AND CONSEQUENTLY PRODUCE LIGHT-WEIGHT HOLLOW GLASS MICRO-SPHERES. THE HOLLOW GLASS MICROSPHERES SO PRODUCED ARE SUPERIOR TO CONVENTIONAL GLASS MICRO-SPHERES ESPECIALLY IN THEIR RESISTANCE TO HEAT AND CAN THEREFORE BE COMBINED WITH METAL, CARBON, AS WELL AS WITH CEMENT AND OTHER MATERIALS TO PRODUCE NOVEL LIGHTWEIGHT COMPOSITES.

公开(公告)号：US3847806A

公开(公告)日：1974-11-12

申请号：US33913273

申请日：1973-03-08

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KUROIWA T ,  HIOKI M ,  NOGUCHI H ,  ABE E ,  KIMURA K ,  KAMINO T ,  JINNAI K ,  ISAYAMA Y ,  YOKOTA A

IPC: C04B18/30 ,  B01D37/00 ,  C02F11/00 ,  C02F11/12 ,  C04B18/04 ,  C04B20/06 ,  F23G7/00 ,  B01D37/02

CPC classification number: C04B20/068 ,  B01D37/00 ,  B01D37/02 ,  C02F11/008 ,  C02F11/12 ,  C04B18/0418 ,  Y02W30/91 ,  C04B14/14 ,  C04B18/04

Abstract: This invention relates to a method for effectively treating sludge formed in city sewer systems. More particularly, this invention relates to a method for obtaining lightweight foamed materials useful as fillers which comprises adding, on filtration of sludge formed in the purification treatment of city sewers, foaming granular volcanic ash deposits to the sludge to facilitate the filtration treatment and utilizing the filtration residue as a lightweight foamed material.

Abstract translation: 本发明涉及一种有效处理城市下水道系统中形成的污泥的方法。 更具体地说，本发明涉及一种获得用作填料的轻质泡沫材料的方法，该方法包括在对下水道净化处理中形成的污泥进行过滤时，将发泡的颗粒状火山灰沉积物加入到污泥中，以促进过滤处理和利用 过滤残渣作为轻质泡沫材料。