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

GB/T6609-2008

%

≥99.90

Critical

4

粒度

Grit

D10

激光粒度仪

Laser Particle sizer

μm

≥5

Critical

D50

15-20

D90

≤45

5

H₂O

电子天平烘箱110℃

Electronic Balance Oven110℃

 %

 ≤0.20

 Ref.

6

PH值

PH计

PHcompute

6-8.5

Major

7

BET

比表面测试仪

Specific surface tester

m²/g

0.22

Common

8

松装密度

Bulk density

松装密度仪

Loose densimeter

g/cm³

1.2-1.8

Minor

9

杂质含量

Impurity content

Fe

GB/T6609-2008

%

≤0.02

Common

Si

≤0.02

Common

Na

≤0.01

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Na₂O、K₂O、SiO₂、Fe₂O₃按照国际检测，其余微量元素用ICP。

The main impurity NA2O K2O SIO2 fe2o3 in alumina was determined according to the international standard，The rest of the micronutrient are in ICP.

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