Chapter 11 Industrial waste as fuel and raw material in the cement industry
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Thomas Neumann
Abstract
There is an increase in the use of secondary or alternative fuels in cement plants worldwide. This can conserve fossil energy sources and raw materials and reduce CO2 emissions. Of particular importance are plastic waste, waste tyres, sewage sludge and meat and bone meal. It must be taken into account that considerable amounts of ash are introduced into the clinker with these fuels. The composition of these fuel ashes differs significantly from a raw meal or clinker composition. This influencing factor must already be taken into account in the composition of the raw meal for clinker production. In addition, water and other volatile elements can enter the kiln via secondary fuels. To ensure trouble-free kiln operation in the cement plant, the process technology must be adapted to the respective fuel mix. Even with optimal operational management, qualitative influences on the clinker or cement produced must be expected if secondary fuels are used.
Abstract
There is an increase in the use of secondary or alternative fuels in cement plants worldwide. This can conserve fossil energy sources and raw materials and reduce CO2 emissions. Of particular importance are plastic waste, waste tyres, sewage sludge and meat and bone meal. It must be taken into account that considerable amounts of ash are introduced into the clinker with these fuels. The composition of these fuel ashes differs significantly from a raw meal or clinker composition. This influencing factor must already be taken into account in the composition of the raw meal for clinker production. In addition, water and other volatile elements can enter the kiln via secondary fuels. To ensure trouble-free kiln operation in the cement plant, the process technology must be adapted to the respective fuel mix. Even with optimal operational management, qualitative influences on the clinker or cement produced must be expected if secondary fuels are used.
Kapitel in diesem Buch
- Frontmatter I
- Contents V
- List of Authors IX
-
Part 1: Measurement and properties
- Chapter 1 Characterization of supplementary cementitious materials and their quantification in cement blends by solid-state NMR 3
- Chapter 2 Mineralogical quantification of cements, wastes and supplementary cementitious materials 33
- Chapter 3 Microstructure analysis with quantitative phase mapping using SEM-EDS and Phase Recognition and Characterization (PARC) Software: applied to steelmaking slag 57
- Chapter 4 The use of μXRF in the characterization of industrial wastes and pozzolanes 97
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Part 2: Characterization of industrial residues
- Chapter 5 Characterization of supplementary cementitious materials: Brown coal fly ashes 165
- Chapter 6 Iron and steel slags: from wastes to by-products of high technical, economical and ecological advantages 203
- Chapter 7 Utilization of Supplementary cementitious materials (SCM) in Portland cement, alkali activated and ternary binders 253
- Chapter 8 Study of some physico chemical properties of plastic clays belonging to Girujan deposits from Chumoukedima Nagaland, India and their prospective industrial applications 297
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Part 3: Use and application of industrial residues
- Chapter 9 Conversion of CO2 into useful products 319
- Chapter 10 Mine tailings as precursors for alkali-activated materials and ettringite binders 345
- Chapter 11 Industrial waste as fuel and raw material in the cement industry 361
- Chapter 12 Fly ash from municipal solid waste Incineration: from industrial residue to resource for zinc 379
- Chapter 13 Residues of industrial wastewater treatment: Hazardous waste or anthropogenic resource? 403
- Chapter 14 Composites of some sustainable siliceous materials for the removal of fluoride from ground water and immobilization of the sludge generated 433
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Part 4: Residues from mining
- Chapter 15 Characterization and mineral processing options of “Kupferschiefer”-type low-grade black shale ore from mining dumps in Central Germany 455
- Chapter 16 Rare-earth elements in phosphogypsum and mineral processing residues from phosphate-rich weathered alkaline ultramafic rocks, Brazil 505
- Chapter 17 The Mn oxides tailing from Amazon Region as low-cost raw material to synthesis of shigaite-type phase 541
- Chapter 18 Eco-cements out of Belterra Clay: An extensive Brazilian bauxite overburden to produce low-CO2 eco-friendly calcium sulphoaluminate based cements 553
- Index 581
Kapitel in diesem Buch
- Frontmatter I
- Contents V
- List of Authors IX
-
Part 1: Measurement and properties
- Chapter 1 Characterization of supplementary cementitious materials and their quantification in cement blends by solid-state NMR 3
- Chapter 2 Mineralogical quantification of cements, wastes and supplementary cementitious materials 33
- Chapter 3 Microstructure analysis with quantitative phase mapping using SEM-EDS and Phase Recognition and Characterization (PARC) Software: applied to steelmaking slag 57
- Chapter 4 The use of μXRF in the characterization of industrial wastes and pozzolanes 97
-
Part 2: Characterization of industrial residues
- Chapter 5 Characterization of supplementary cementitious materials: Brown coal fly ashes 165
- Chapter 6 Iron and steel slags: from wastes to by-products of high technical, economical and ecological advantages 203
- Chapter 7 Utilization of Supplementary cementitious materials (SCM) in Portland cement, alkali activated and ternary binders 253
- Chapter 8 Study of some physico chemical properties of plastic clays belonging to Girujan deposits from Chumoukedima Nagaland, India and their prospective industrial applications 297
-
Part 3: Use and application of industrial residues
- Chapter 9 Conversion of CO2 into useful products 319
- Chapter 10 Mine tailings as precursors for alkali-activated materials and ettringite binders 345
- Chapter 11 Industrial waste as fuel and raw material in the cement industry 361
- Chapter 12 Fly ash from municipal solid waste Incineration: from industrial residue to resource for zinc 379
- Chapter 13 Residues of industrial wastewater treatment: Hazardous waste or anthropogenic resource? 403
- Chapter 14 Composites of some sustainable siliceous materials for the removal of fluoride from ground water and immobilization of the sludge generated 433
-
Part 4: Residues from mining
- Chapter 15 Characterization and mineral processing options of “Kupferschiefer”-type low-grade black shale ore from mining dumps in Central Germany 455
- Chapter 16 Rare-earth elements in phosphogypsum and mineral processing residues from phosphate-rich weathered alkaline ultramafic rocks, Brazil 505
- Chapter 17 The Mn oxides tailing from Amazon Region as low-cost raw material to synthesis of shigaite-type phase 541
- Chapter 18 Eco-cements out of Belterra Clay: An extensive Brazilian bauxite overburden to produce low-CO2 eco-friendly calcium sulphoaluminate based cements 553
- Index 581