Search results for keyword: africa
Kyanite
lapis lazuli
Lapis lazuli is a beautiful blue gemstone that has been cherished and valued in many different cultures throughout the centuries. Its name comes from the Latin words “lapis,” which means stone, and “lazuli,” which means blue. Lapis lazuli is composed mainly of the mineral lazurit......
1041 
Hannah
Zircon nozzle
Garnet is one of the most popular semi-precious stones. It is known for its deep red color, but some rare forms of this beautiful stone come in a variety of colors. Garnet is found in many places, including africa, India, the Czech Republic, and the United States.
The water mouth garnet is one of......
Saint-Venante
The St. Vincentian Heritage
The beautiful islands of St Vincent and the Grenadines are located in the Caribbean Sea and form part of the Windward Islands. They are known for their lush landscapes, green valleys, and stunning white sand beaches making them a popular tourist destination.
St Vincen......
The quality of blast furnace coke in some countries
The quality of blast furnace coke is an important variable in the performance of blast furnaces in steel production. In many countries, the quality of blast furnace coke varies greatly and it is important for steel producers to be informed about the quality of coke in their country of operation. T......
coal availability
Availability of Coal
Coal is a naturally combustible mineral, which is used for fuel in a variety of energy applications and is considered to be one of the most abundant resources of energy in the world. As a fuel source, it has been used for centuries, providing heat for cooking and other manufa......
Moisture grade of coal quality index
Introduction
The moisture content of coal is a major indicator of the coal quality and plays an important role in the evaluation of coal-fired power plants. In the power industry, the moisture content is often referred to as the drought level. Different droughts levels have different effects on t......
Calorific value grade of coal quality index
According to the characteristics of anthracite reserves and its quality indexes, it can be divided into: high heat grade anthracite, medium heat grade anthracite, low heat grade anthracite, etc. The grade of thermal value is based on the calorific value measurement.
1. High thermal grade anthrac......
Phosphorus classification of coal quality index
The Determination of Phosphorus Grades in Coal Quality Indicators
The determination of phosphorus grades in coal quality indicators is an important task in coal production. This is due to a number of reasons, but two of the most important are:
1) Phosphorus grades are an indication of the coal......
coal
Coal
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into......
coking coal
Introduction
Coking coal, also known as metallurgical coal, is a special type of coal that is used in the production of steel and other metals. It is made up of two main groups of coal: bituminous and anthracite. Coking coal is known for its low ash and sulphur content and its ability to form cok......
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