how do we get limestone what processes are used

how do we get limestone what processes are used

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  • What is limestone?

    Weathering and Limestone Weathering is the breakdown of rock by physical, chemical or biological process Limestone areas are predominently affected by chemical weathering when rainwater, which contains a weak carbonic acid, reacts with limestone When it rains limestone is dissolved...

  • Steelmaking

    Lime is put to use in primary steelmaking and secondary refining process Electric Arc Furnace (EAF) and Basic Oxygen Furnaces (BOF, QBOP, KOBM): Quicklime (dolomitic and high calcium) is used by steelmakers as a flux agent to efficiently and effectively remove impurities such as phosphorus, silica and alumina from scrap melting in the EAF...

  • Lime (material)

    The process by which limestone (calcium carbonate) is converted to quicklime by heating, then to slaked lime by hydration, and naturally reverts to calcium carbonate by carbonation is called the lime cycle The conditions and compounds present during each step of the lime cycle have a strong influence of the end product, thus the complex and varied physical nature of lime products...

  • How to Make Quick Lime and Slaked Lime

    How to Make Quick Lime and Slaked Lime: this is how to make quicklime out of seashells and then make slaked lime which is a good mortar and putty and paste to make quicklime all the materials are as followed 1)a container of some sort 2)any lime product(i use seashells) 3)water 4)time....

  • Lime for treating Drinking Water

    Lime products soften water by removing carbonate and non-carbonate hardness This purifies the water for consumption, provides better tasting water and allows soap products to lather readily In the softening process, lime products completely precipitate out, and can precipitate metals, non-metals, suspended solids and dissolved solids Lime softening has also been proven to disinfect water by ....

  • How Do Sedimentary Rocks Form?

    Sedimentary rocks like shale, limestone and sandstone form from pre-existing rocks If you start with sand, mud or organic material, these sediment deposits get eroded and transported over time This happens because shorelines move back and forth compacting material below like a steam roller...

  • Sedimentary Processes and Rocks

    Sedimentary Processes and Rocks - Chapter 7 Including, Introduction , How do we get 1000' thick gypsum deposits? Repeated flooding with partial evaporation? Secondary remobilization (after deposition)? , Primary precipitation vs derived from limestone or aragonite...

  • What is Calcium Carbonate?

    Many of us encounter calcium carbonate for the first time in the school classroom, where we use blackboard chalk Chalk has been used as a writing tool for over 10,000 years and is a fine, microcrystalline material As limestone, calcium carbonate is a ,...

  • How is limestone formed

    May 10, 2011· Limestone is a sedimentary rock made up of calcite (CaCO3) as its main mineral Some limestones were formed by chemical deposition and others by ,...

  • How iron is made

    The raw materials used to produce pig iron in a blast furnace are iron ore, coke, sinter, and limestone Iron ores are mainly iron oxides and include magnetite, hematite, limonite, and many other rocks The iron content of these ores ranges from 70% down to 20% or less...

  • What is Limestone?

    What is Limestone? - Properties, Types & Us , limestone has long been used as a building material , We have over 200 college courses that prepare you to earn credit by exam that is ....

  • Limestone Mining

    LIMESTONE MINING Calcite and dolomite, when heated and in some cases slurried or combined with salt, are used in making many everyday products such as paper, glass, paint and varnish, soap and detergents, textiles, refractories, baking powder, and pharmaceuticals, including milk of magnesia and bicarbonate of soda...

  • How chalk is made

    Chalk that is intended for the classroom must undergo stringent tests in order to perform well and be labeled nontoxic All incoming materials are tested for purity before being used After the chalk has been made into sticks, one stick from each batch is selected for tests...

  • What is the purpose of limestone in a blast furnace?

    Nov 14, 2017· limestone is used to remove impurities in the furnace and the main impurity of the blast furnace is silica (sand and rock) which is silicon dioxide silicon dioxide is a solid at furnace temperatures so it reacts with calcium oxide from the decomp....

  • The Limestone Cycle

    Oct 21, 2016· The Limestone cycle is a key topic in GCSE Chemistry We start with one of three forms of calcium carbonate, Chalk, Limestone or Marble When Limestone is heated it undergoes thermal decomposition ....

  • Limestone

    Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscsIts major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO 3)A closely related rock is dolomite, which contains a high percentage of the mineral dolomite, CaMg(CO 3) 2...

  • GCSE CHEMISTRY

    Extraction of Metals Extraction of Iron Chemistry of the blast furnace () Limestone is calcium carbonate (CaCO 3) and it is added to the blast furnace to remove the impurities in the iron ore Calcium carbonate is decomposed by heat in the furnace to give calcium oxide and carbon dioxide This is called thermal decomposition (see examples of other carbonates) ....