광산 크러셔에 관한 주요 목표 질문 및 답변은 무엇입니까?

시간:2021년 7월 6일

Mining crushers are critical machines used in the mining industry to crush and process raw materials. Below are some key objective questions and answers related to mining crushers:

Objective Questions and Answers

1. What is a mining crusher?

Question:
A mining crusher is primarily used for:
a) Drilling holes in the earth
b) Crushing rocks and ores into smaller sizes
c) Sorting minerals by weight
d) Grinding minerals to powder

Answer:
b) Crushing rocks and ores into smaller sizes

A mining crusher is used to reduce large rocks into smaller, manageable pieces for further processing.

2. What types of crushers are commonly used in mining?

Question:
Which of the following is not a type of mining crusher?
a) Jaw Crushers
b) Cone Crushers
c) Ball Mills
d) Impact Crushers

Answer:
c) Ball Mills

Ball mills are grinding devices used for processing materials after the crushing stage, not crushers themselves.

3. What is the purpose of a primary crusher?

Question:
The primary crusher is mainly used for:
a) Refining minerals
b) Processing finished goods
c) Initial size reduction of raw materials
d) Transporting minerals

Answer:
c) Initial size reduction of raw materials

A primary crusher is the first stage in the crushing process; it handles large chunks of raw materials.

4. Which material is commonly used to manufacture crusher jaws and cones?

Question:
Crusher jaws and cones are typically made of:
a) Aluminum
b) High manganese steel
c) Plastic
d) Copper

Answer:
b) High manganese steel

High manganese steel is used due to its durability and resistance to wear, especially for crushing hard materials.

5. What is the role of a secondary crusher?

Question:
A secondary crusher is used to:
a) Transport ore
b) Perform the initial size reduction
c) Further reduce the size of the material after the primary crusher
d) Process finished mineral products

Answer:
c) Further reduce the size of the material after the primary crusher

Secondary crushers are used after the primary crusher to achieve finer material sizes.

6. Which type of crusher is suitable for tertiary crushing?

Question:
The following crushers are suitable for tertiary crushing (fine crushing):
a) Hammer crusher
b) Roll crusher
c) Cone crusher
d) Gyratory crusher

Answer:
c) Cone crusher

Cone crushers are widely used for tertiary crushing due to their ability to produce finely crushed materials.

7. What is the principle of operation for a jaw crusher?

Question:
The principle of operation of a jaw crusher involves:
a) Rotating hammers that crush the material
b) A mantle and concave crushing the material
c) Compression between two jaws to reduce size
d) Continuous grinding

Answer:
c) Compression between two jaws to reduce size

Jaw crushers operate by compressing material between a stationary jaw and a moving jaw.

8. What is the main advantage of cone crushers over jaw crushers?

Question:
Cone crushers are preferred over jaw crushers for:
a) Handling sticky materials
b) Producing finer particle sizes
c) Being easier to maintain
d) Crushing larger rocks

Answer:
b) Producing finer particle sizes

Cone crushers are better suited for secondary and tertiary crushing, producing finer output.

9. What is the difference between gyratory crushers and jaw crushers?

Question:
Compared to jaw crushers, gyratory crushers:
a) Can process larger materials
b) Are cheaper and easier to maintain
c) Are less efficient for primary crushing
d) Use horizontal motion instead of compression

Answer:
a) Can process larger materials

Gyratory crushers are often used for primary crushing when handling very large material.

10. What safety feature is commonly implemented in mining crushers?

Question:
Mining crushers are equipped with safety features such as:
a) Sensors for high temperatures
b) Automatic lubrication systems
c) Overload protection and tramp release mechanisms
d) Secured bolts for raw material handling

Answer:
c) Overload protection and tramp release mechanisms

These features prevent damage to the crusher and ensure safety during operation.

This set of objective questions is designed to cover essential aspects of mining crushers, from types and functionalities to materials and safety mechanisms.