序号

serial number

检测项目

Test Item

检测设备及方法

Testing equipment

and methods

单位

unit standard

of measurement

技术指标

Technical

Specification

缺陷类型

Defect type

1

外观

outward appearance

目测

estimate range

by-eye

白色粉末，颜色一致，粉体无硬块，无异物

White powder, uniform color, powder without lumps, no foreign matter

Major

2

晶型

Crystalline form

XRD

α

Critical

3

纯度

degree of purity

ICP

%

≥99.92

Critical

4

原晶粒度

Primary

grain size

D10

激光粒度仪

Laser Particle sizer

μm

0.80-0.90

Critical

D50

2.80-3.20

D90

≤7.00

5

H₂O

电子天平烘箱110℃

Electronic Balance Oven110℃

%

≤0.15

Ref.

6

PH值

PH计

PHcompute

7-10

Major

7

BET

比表面测试仪

Specific surface tester

m²/g

0.6-0.8

Common

8

松装密度

Bulk density

松装密度仪

Loose densimeter

g/cm³

1.0-1.2

Common

9

杂质含量

Impurity content

Fe

ICP-AES

ppm

≤140

Common

Si

≤200

Common

Na

≤300

Major

微量元素

含量

Micronutrient

Zn

ICP-AES

ppm

≤1

Major

Ca

≤5

Common

Mg

≤3

Common

K

≤10

Common

备注

1、粒度检测因设备不同，数据有差别。The data of particle size testing vary with different equipment.

2、氧化铝主要杂质用ICP分析检测。The main impurity of alumina was detected by ICP.

3、其余指标因检测方法不同而异。The other indexes varied with different detection methods.