公开(公告)号：WO2018193398A1

公开(公告)日：2018-10-25

申请号：PCT/IB2018/052715

申请日：2018-04-19

Applicant: ZETLAND TECHNOLOGIES LIMITED ,  VAN DER WALT, Louis, Stephanus

Inventor： SYMONS, Michael, Windsor ,  KHOZA, Tebogo, Ankie ,  REDDY, Goddeti, Siva, Mohan ,  CHIUTA, Steven

IPC: C04B28/26 ,  B27N3/08 ,  D21J1/04 ,  C04B18/02

CPC classification number: C04B28/26 ,  B27N3/002 ,  B27N3/04 ,  B27N3/08 ,  B27N3/18 ,  C04B28/006 ,  D21J1/04 ,  C04B7/02 ,  C04B14/106 ,  C04B14/303 ,  C04B18/08 ,  C04B18/26 ,  C04B22/143 ,  C04B24/2623 ,  C04B40/0071

Abstract: A method of producing a pressed board product of a predetermined thickness specification includes subjecting a predetermined mass per unit area of a precursor mixture to pressing in a press, at a predetermined pressing force with or without the application of heat. The precursor mixture comprises particulate material, an alkali metal silicate, polyvinyl alcohol, and a geopolymerisation promoter for promoting geopolymerisation of the alkali metal silicate. The method includes, prior to and/or during and/or after subjecting the precursor mixture to the pressing, allowing at least partial setting by geopolymerization of the alkali metal silicate.