成人免费毛片一区二区三区-国产乱子伦农村xxxx-精品国产免费一区二区三区-免费av在线网站-人妻激情偷乱一区二区三区-四虎永久在线精品无码视频

序號(hào)

serial number

檢測(cè)項(xiàng)目

Test Item

檢測(cè)設(shè)備及方法

Testing equipment

and methods

單位

unit standard

of measurement

技術(shù)指標(biāo)

Technical

Specification

缺陷類型

Defect type

1

外觀

outward appearance

目測(cè)

estimate range

 by-eye

白色粉末，顏色一致，粉體無硬塊，無異物

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

Major

2

晶型

Crystalline form

XRD

α

Critical

3

純度

degree of purity

GB/T6609-2008

%

≥99.90

Critical

4

粒度

Grit

D10

激光粒度儀

Laser Particle sizer

μm

≥5

Critical

D50

15-20

D90

≤45

5

H₂O

電子天平烘箱110℃

Electronic Balance Oven110℃

 %

 ≤0.20

 Ref.

6

PH值

PH計(jì)

PHcompute

6-8.5

Major

7

BET

比表面測(cè)試儀

Specific surface tester

m²/g

0.22

Common

8

松裝密度

Bulk density

松裝密度儀

Loose densimeter

g/cm³

1.2-1.8

Minor

9

雜質(zhì)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

備注

1、粒度檢測(cè)因設(shè)備不同，數(shù)據(jù)有差別。The data of particle size testing vary with different equipment.

2、氧化鋁主要雜質(zhì)Na₂O、K₂O、SiO₂、Fe₂O₃按照國(guó)際檢測(cè)，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、其余指標(biāo)因檢測(cè)方法不同而異。The other indexes varied with different detection methods.