| Process
Description |
Characteristics |
Methods |
Reaction
Plan |
| Process / Product
Characteristics |
Specification |
Measurement
Technique |
Sample Size &
Frequency |
Monitoring & Control
Method |
| Raw
Material Selection |
Impurity
Whiteness
(Brightness)
Chemical
Specifications
|
Impurity
Free Required
As
Per our Requirement /
PO
As Per Customer
Requirement or Product
Data Sheet
|
Manual Sorting
Whiteness
Tester / Comparison Method
Chemical
Analysis (Lab testing)
|
As Per Standards
As Per Standards
As Per Set Standards |
Standard Sample
Data
Comparison & Trend
Analysis
Data Comparison &
Trend Analysis |
Accepting the Raw Material from the mines , only if impurity level is less than acceptable limits.
Accepting the Mineral only if Whiteness is equal to or more than the standard sample or as per the purchase order requirement.
Accept the Material only if Chemistry is as per requirement. follow decision rule for reconfirmation.If failure is confirmed, reject the shipment or accept for sub standard quality under concession. |
| Crushing |
Impurity
Size of
Material |
No Impurity Required
Standard
Sample Size |
Manual / Visual
Manual / Visual
|
100%
As per set standards. |
Sorting
/ Segregate
Sorting/
Segregate |
Each lot of Material is visually inspected for impurities / lab testing at factory. Over sized material re-crushed & high impurity rejected. |
| Mixing |
Proportion
Homogeneous |
As Per
Requirement
Homogenous
Mixing |
Std
Size Container
Visual |
100%
100% |
Sorting
/ Segregate
Proper Mixing |
Accepting only if mixing is in required proportion or else corrections made.
|
|
| Grinding |
Particle Size
Whiteness
Colour
Uniformity
Chemical Specification
|
As per
Customer Requirement
or Product Data
Sheet |
Sieve /
Particle Size Analyzer
Whiteness
Tester
Comparison with Std
Sample
Chemical Analysis |
As per set standards
As per set standards
One sample per 10
Bag
One Sample Per
Batch |
Do
trend Analysis |
Accept the product only if particle size is equal to or less than required.
Accepting the powder only if Whiteness is equal to standard or more than required one.
Accept the product only if colour is matching with the standard sample.
Accepting the powder only if Chemical specifications are as per requirement.
Follow decision rule for reconfirmation. |
| Bag
Filling |
Weight |
25 Kg / 50 Kg
Standard or As Per Customer Requirement |
Weighing by
Weighing Machine |
100% |
Monitor the weight of every bag by electronic weighing machines. |
Accepting the bags only if weight is equal to standard bag weight or slightly higher than the required one.
In case of less weight, entire lot should go for correction & re-packing. |
| Storage / Warehousing |
Cover / Stitching of Bags
Grade-Wise Stacking |
All bags must be Covered and Stitched.
Grade-wise
Stacking of all the bags |
Visual
Visual |
100%
Stacks
100% Stacks |
Contamina- tion
with foreign particles and moisture |
Accepting the Mineral only if total bags are stitched, covered and protected from moisture and contamination.
Accepting the Mineral only if there is no contamination due to stack mixing, moisture or contamination in the bags, reject the entire lot. |
