Float-Sink Analysis
Float-Sink Analysis is a basic but important testing method used in coal mining to determine coal quality. It helps mining companies figure out how valuable their coal is and how well it can be cleaned. Think of it like sorting different pieces that either float or sink in special liquids - this tells workers how much useful coal they have versus unwanted materials. This process is sometimes also called "Washability Analysis" or "Gravity Separation Testing" because it uses the different weights of materials to separate them.
Examples in Resumes
Conducted Float-Sink Analysis tests on 500+ coal samples to determine processing requirements
Supervised quality control using Float-Sink Analysis and Washability Analysis methods
Improved coal recovery rates by 15% through optimized Float-Sink Analysis testing procedures
Typical job title: "Coal Quality Analysts"
Also try searching for:
Where to Find Coal Quality Analysts
Professional Organizations
Job Boards
Professional Networks
Example Interview Questions
Senior Level Questions
Q: How would you implement a quality control program using float-sink analysis?
Expected Answer: Should explain how to set up regular testing schedules, train staff, maintain equipment, establish documentation procedures, and use results to improve coal processing efficiency.
Q: What improvements have you made to float-sink analysis procedures in your past experience?
Expected Answer: Should discuss specific examples of improving accuracy, efficiency, or safety in testing procedures, and how these improvements impacted overall coal quality and production.
Mid Level Questions
Q: What safety procedures are important when conducting float-sink analysis?
Expected Answer: Should mention proper handling of testing liquids, personal protective equipment, proper ventilation, and following laboratory safety protocols.
Q: How do you interpret float-sink analysis results?
Expected Answer: Should explain how to read test results, create washability curves, and make recommendations for coal processing based on the data.
Junior Level Questions
Q: Can you explain the basic steps of float-sink analysis?
Expected Answer: Should describe sample preparation, using different density liquids, separating materials, weighing results, and basic record keeping.
Q: What equipment is used in float-sink analysis?
Expected Answer: Should list basic laboratory equipment like density vessels, sieves, scales, and safety equipment used in the testing process.
Experience Level Indicators
Junior (0-2 years)
- Basic laboratory procedures
- Sample preparation
- Data recording
- Safety protocols
Mid (2-5 years)
- Results interpretation
- Quality control procedures
- Equipment maintenance
- Test optimization
Senior (5+ years)
- Process improvement
- Team supervision
- Quality program development
- Technical training
Red Flags to Watch For
- No laboratory experience or understanding of basic testing procedures
- Lack of attention to detail in documentation
- Poor understanding of safety protocols
- No knowledge of coal quality parameters
Related Terms
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