Spherical barium sulfate and method for producing the same

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专利权人:

堺化学工業株式会社

发明人:

豊田 舞,志水 勇介,緒方 宏宣

申请号：

JP2016017241

公开号：

JP6696191B2

申请日:

2016.02.01

申请国别(地区):

JP

年份:

2020

代理人:

摘要：

PROBLEM TO BE SOLVED: To provide spherical barium sulfate which has a low specific density and high sphericity, sufficient strength, excellent slipperiness and safety and very good touch feeling and to provide a method for achieving such spherical barium sulfate.SOLUTION: There is provided a method for producing spherical barium sulfate which comprises: a step (1) of spray drying a slurry of barium sulfate particles having an average primary particle diameter of 0.005 to 0.25 μm and a step (2) of calcining the dried product obtained in the step (1) at 200 to 1100°C.SELECTED DRAWING: Figure 1

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