公开(公告)号：US09796598B2

公开(公告)日：2017-10-24

申请号：US14777972

申请日：2014-03-14

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Naomichi Hori ,  Takuma Yoshida

IPC: C01G23/00 ,  B02C17/14

CPC classification number: C01G23/005 ,  B02C17/14 ,  C01P2004/61

Abstract: A method for producing a potassium titanate easily and inexpensively produces a potassium titanate that exhibits high thermal stability and has a significantly low fibrous potassium titanate content. The method for producing a potassium titanate includes calcining a raw material mixture by heating the raw material mixture to a maximum calcination temperature that exceeds 1000° C. while controlling the heating rate from 1000° C. to the maximum calcination temperature to 15° C./min or less to obtain a calcine, and cooling the calcine while controlling the cooling rate from the maximum calcination temperature to 500° C. to 100° C./min or more, followed by grinding, the raw material mixture including a titanium compound and a potassium compound so that the molar ratio (number of moles of titanium compound on a titanium atom basis/number of moles of potassium compound on a potassium atom basis) of the number of moles of the titanium compound on a titanium atom basis to the number of moles of the potassium compound on a potassium atom basis is 2.7 to 3.3.

公开(公告)号：US20160272504A1

公开(公告)日：2016-09-22

申请号：US14777972

申请日：2014-03-14

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Naomichi Hori ,  Takuma Yoshida

IPC: C01G23/00

CPC classification number: C01G23/005 ,  B02C17/14 ,  C01P2004/61

Abstract: A method for producing a potassium titanate easily and inexpensively produces a potassium titanate that exhibits high thermal stability and has a significantly low fibrous potassium titanate content. The method for producing a potassium titanate includes calcining a raw material mixture by heating the raw material mixture to a maximum calcination temperature that exceeds 1000° C. while controlling the heating rate from 1000° C. to the maximum calcination temperature to 15° C./min or less to obtain a calcine, and cooling the calcine while controlling the cooling rate from the maximum calcination temperature to 500° C. to 100° C./min or more, followed by grinding, the raw material mixture including a titanium compound and a potassium compound so that the molar ratio (number of moles of titanium compound on a titanium atom basis/number of moles of potassium compound on a potassium atom basis) of the number of moles of the titanium compound on a titanium atom basis to the number of moles of the potassium compound on a potassium atom basis is 2.7 to 3.3.

Abstract translation: 制造钛酸钾的方法容易且廉价地产生显示出高热稳定性并且具有显着低的纤维状钛酸钾含量的钛酸钾。 制造钛酸钾的方法包括通过将原料混合物加热到超过1000℃的最大煅烧温度，同时将加热速率从1000℃控制到最大煅烧温度至15℃来煅烧原料混合物。 /分钟以下，得到煅烧物，在将烧成温度从最高煅烧温度控制在500℃〜100℃/分钟以上的同时进行冷却，然后研磨，将含有钛化合物 和钾化合物，使钛化合物在钛原子上的摩尔数相对于钛原子的摩尔比（钛化合物的钛原子摩尔数/基于钾原子的钾化合物的摩尔数） 基于钾原子的钾化合物的摩尔数为2.7〜3.3。