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Suitcase, tea brew and buck with flux

Glossary of metallurgical terms

People working in each industry use terms with hidden meanings that are only understood in their workplace environment. Language scholars call such words professional jargon. Metallurgy is no exception. Take the test to find out what these familiar words mean in metallurgy.

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What kind of buck can be found in the pit?
A kozyol (buck in Russian) is a vast rock stratum broken up by secondary blasting

A kozyol (buck in Russian) in open-pit mining is a rock stratum that has not been broken up by blasting.


Ore is extracted by directional blasting which involves drilling boreholes in geological formations to be loaded with explosives that produce a massive rock burst. However, the breakup is not always even. Sometimes, large strata remain unaffected. The kozyols are broken up by secondary blasting.

A kozyol (buck in Russian) in open-pit mining is a rock stratum that has not been broken up by blasting.


Ore is extracted by directional blasting which involves drilling boreholes in geological formations to be loaded with explosives that produce a massive rock burst. However, the breakup is not always even. Sometimes, large strata remain unaffected. The kozyols are broken up by secondary blasting.

A kozyol (buck in Russian) in open-pit mining is a rock stratum that has not been broken up by blasting.


Ore is extracted by directional blasting which involves drilling boreholes in geological formations to be loaded with explosives that produce a massive rock burst. However, the breakup is not always even. Sometimes, large strata remain unaffected. The kozyols are broken up by secondary blasting.

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What is a chemodan (suitcase in Russian) among miners?
A chemodan is a chunk of rock that is too large for bucketing into a dump truck.
A chemodan is a very large chunk of rock that does not fit into an excavator bucket.

After the blast, rock is crushed into smaller pieces and bucketed into dump trucks to be hauled away to the concentrator. Where large chunks remain, they get bored through and blasted in-pit.

Large pieces of rock smaller than a suitcase are called oversize rock. They also cannot be taken to the plant, as they may get stuck in the crusher. They are split with a special tool – a hydraulic breaker, which is attached to the boom of an excavator.

At the plant, all rocks are crushed to a fine fraction to extract valuable elements.
A chemodan is a very large chunk of rock that does not fit into an excavator bucket.

After the blast, rock is crushed into smaller pieces and bucketed into dump trucks to be hauled away to the concentrator. Where large chunks remain, they get bored through and blasted in-pit.

Large pieces of rock smaller than a suitcase are called oversize rock. They also cannot be taken to the plant, as they may get stuck in the crusher. They are split with a special tool – a hydraulic breaker, which is attached to the boom of an excavator.

At the plant, all rocks are crushed to a fine fraction to extract valuable elements.
A chemodan is a very large chunk of rock that does not fit into an excavator bucket.

After the blast, rock is crushed into smaller pieces and bucketed into dump trucks to be hauled away to the concentrator. Where large chunks remain, they get bored through and blasted in-pit.

Large pieces of rock smaller than a suitcase are called oversize rock. They also cannot be taken to the plant, as they may get stuck in the crusher. They are split with a special tool – a hydraulic breaker, which is attached to the boom of an excavator.

At the plant, all rocks are crushed to a fine fraction to extract valuable elements.
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What do tailings refer to in metallurgy?
During flotation, non-ferrous metals rise to the surface along with froth
Tailings refer to mining waste that is left over after ore enrichment. Mining waste contains a negligible amount of non-ferrous metals and is transported to tailings dumps near mining and processing plants.

It is noteworthy that because tailings dumps absorb greenhouse gasses, they can help achieve decarbonization.

Nornickel is implementing a revolutionary project that involves research into how mining waste in tailings dumps absorbs greenhouse gasses. The objective is to improve the absorption capacity of tailings dumps.
Tailings refer to mining waste that is left over after ore enrichment. Mining waste contains a negligible amount of non-ferrous metals and is transported to tailings dumps near mining and processing plants.

It is noteworthy that because tailings dumps absorb greenhouse gasses, they can help achieve decarbonization.

Nornickel is implementing a revolutionary project that involves research into how mining waste in tailings dumps absorbs greenhouse gasses. The objective is to improve the absorption capacity of tailings dumps.
Tailings refer to mining waste that is left over after ore enrichment. Mining waste contains a negligible amount of non-ferrous metals and is transported to tailings dumps near mining and processing plants.

It is noteworthy that because tailings dumps absorb greenhouse gasses, they can help achieve decarbonization.

Nornickel is implementing a revolutionary project that involves research into how mining waste in tailings dumps absorbs greenhouse gasses. The objective is to improve the absorption capacity of tailings dumps.
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What is flux in metallurgy?
Flux is added to the charge to stabilize the melting process.
Flux is a mixture of chemicals that are added during melting. Flux helps lower the melting point, making it easier to separate valuable minerals from gangue minerals.

Limestone, bauxite, fluorspar, or other minerals can be used as a flux. A properly chosen flux helps to produce a stable and homogeneous alloy, which is why the composition of the flux is determined by process engineers.
Flux is a mixture of chemicals that are added during melting. Flux helps lower the melting point, making it easier to separate valuable minerals from gangue minerals.

Limestone, bauxite, fluorspar, or other minerals can be used as a flux. A properly chosen flux helps to produce a stable and homogeneous alloy, which is why the composition of the flux is determined by process engineers.
Flux is a mixture of chemicals that are added during melting. Flux helps lower the melting point, making it easier to separate valuable minerals from gangue minerals.

Limestone, bauxite, fluorspar, or other minerals can be used as a flux. A properly chosen flux helps to produce a stable and homogeneous alloy, which is why the composition of the flux is determined by process engineers.
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What is brazing in metallurgy?
Brazing is a metal works repair method
Brazing is a special welding method used to repair metal works. Brazing is mostly used to remove gaps. When brazing, a filler metal is melted between two pieces of metal using high temperature; it acts as a glue that holds the pieces of metal together.

Brazing is a high-precision task that requires skill and experience. If the gap is not properly prepared and brazed, the flaw may become even worse.
Brazing is a special welding method used to repair metal works. Brazing is mostly used to remove gaps. When brazing, a filler metal is melted between two pieces of metal using high temperature; it acts as a glue that holds the pieces of metal together.

Brazing is a high-precision task that requires skill and experience. If the gap is not properly prepared and brazed, the flaw may become even worse.
Brazing is a special welding method used to repair metal works. Brazing is mostly used to remove gaps. When brazing, a filler metal is melted between two pieces of metal using high temperature; it acts as a glue that holds the pieces of metal together.

Brazing is a high-precision task that requires skill and experience. If the gap is not properly prepared and brazed, the flaw may become even worse.
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What is vacuum pressure in mining?
Vacuum pressure is the difference in pressure in a mine and at ground level.
Specialized fans are installed in a mine in order to expel harmful gases and control the temperature. They suck in air and lower pressure in the mine relative to ambient atmospheric pressure. Vacuum pressure refers to the difference in pressure. This is the primary metric used to assess how well mine ventilation is working. Vacuum pressure determines how much air there is inside a mine and how comfortable working conditions in it are.

Creating optimal vacuum pressure is a complex process. Air needs to overcome the resistance of the walls of a shafy or drfit, and navigate multiple turns, into wider and narrower sections. Pressurization calculations should take into account these factors.
Specialized fans are installed in a mine in order to expel harmful gases and control the temperature. They suck in air and lower pressure in the mine relative to ambient atmospheric pressure. Vacuum pressure refers to the difference in pressure. This is the primary metric used to assess how well mine ventilation is working. Vacuum pressure determines how much air there is inside a mine and how comfortable working conditions in it are.

Creating optimal vacuum pressure is a complex process. Air needs to overcome the resistance of the walls of a shafy or drfit, and navigate multiple turns, into wider and narrower sections. Pressurization calculations should take into account these factors.
Specialized fans are installed in a mine in order to expel harmful gases and control the temperature. They suck in air and lower pressure in the mine relative to ambient atmospheric pressure. Vacuum pressure refers to the difference in pressure. This is the primary metric used to assess how well mine ventilation is working. Vacuum pressure determines how much air there is inside a mine and how comfortable working conditions in it are.

Creating optimal vacuum pressure is a complex process. Air needs to overcome the resistance of the walls of a shafy or drfit, and navigate multiple turns, into wider and narrower sections. Pressurization calculations should take into account these factors.
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You know little about metallurgists and miners, but you find their slang fascinating
People from a variety of occupations work at mining and smelting companies, and each occupation has its own terminology. The annual meeting of Nornickel’s top management with experts and journalists will help you learn more about the industry.
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You are curious about the metals industry

Perhaps you are not familiar with some of the sector-specific terms. What you need to confirm that your guesses were right is accurate information. You will find it in the description of Nornickel's manufacturing improvement projects.

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Metallurgy is an open book to you

Perhaps you rub shoulders with metallurgists or are employed in the field? Otherwise, it would be difficult to explain your thorough understanding of professional jargon. Take a test about Nornickel products. You will learn about the company’s metals and their application in green energy.

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The image was generated using the Recraft AI neural network, Photos by Nornickel

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