{"id":1545,"date":"2019-01-26T14:33:57","date_gmt":"2019-01-26T13:33:57","guid":{"rendered":"http:\/\/www.begagnatlagret.se\/?page_id=1545"},"modified":"2019-02-13T20:15:07","modified_gmt":"2019-02-13T19:15:07","slug":"kiln","status":"publish","type":"page","link":"https:\/\/hoganasborgestad.com\/fi\/segments\/cement\/kiln\/","title":{"rendered":"Kiln"},"content":{"rendered":"\n

KILN<\/h1>\n\n\n\n

Achieve world-class production capacity in your kiln<\/h3>\n\n\n\n

In this section we focus on dry-process kilns, as they represent the majority of kilns now in use. The refractory requirements of wet- and semi-dry process kilns are essentially similar after the inlet stage.<\/p>\n\n\n\n

Today\u2019s dry-process kilns are shorter, without loss of production capacity. Many producers use the kiln to burn waste materials \u2013 a good source of low-cost energy. Widespread use of alternative fuel can cause problems for the refractories that are installed in your kiln.<\/p>\n\n\n\n

Inlet cone:<\/strong> The most important considerations in the inlet cone is alkali resistance. Raw meal can quickly deteriorate refractories that are not resistant, and temperature fluctuations can cause condensation of alkaline vapors in the refractory lining.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Inlet zone:<\/strong> The primary challenge for the lining in the inlet zone is alkali-resistance.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Safety zone:<\/strong> The primary criteria in the safety zone are alkali- and abrasion-resistance. Brick lining should have a progressively increasing refractoriness and alumina content<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Upper transition zone:<\/strong> The correct magnesia-based refractories are needed due to the following variables:<\/p>\n\n\n\n

  1. Variations in oxygen potential ,caused by use of multiple fuels. After several redox cycles, some brick qualities may become weak and friable.<\/li>
  2. Operation with an unstable coating \u2013 caused by a variety of factors. Brick becomes exposed to infiltration by clinker liquid phase.<\/li>
  3. Direct action of alkali chlorides and sulfates, a result of using several waste fuels. Brick may subsequently cap.<\/li>
  4. Build-up of abnormal rings, resulting from unbalanced sulfate modulus.<\/li>
  5. Kiln shell corrosion caused by sulfate and chloride diffusion through the refractory, can result from the burning of some waste fuels.<\/li><\/ol>\n\n\n\n
    \"\"<\/a><\/figure>\n\n\n\n

    Burning zone:<\/strong> Combustion engineering and generation of clinker coating are the two factors paramount to the optimal functioning of the burning zone. Successful combustion engineering supports optimum clinker formation, and minimizes wear and stress on refractories and kiln shell. Poor combustion engineering leads to thermal overload and rapidly fluctuating redox conditions, which are bad for both refractory lining and clinker. Thermal overload will ultimately cause the refractory to melt. Redox conditions lead to the brick\u2019s accelerated friability, or brittleness.<\/p>\n\n\n\n

    The second factor is equally important: the generation of clinker coating on the refractory brick. This protects the brick and helps the clinkerization reaction throughout the kiln.<\/p>\n\n\n\n

    Several variables can affect the maintenance of this coating including large fluctuations in raw meal parameters and poorly nodularised clinker can result in liquid phase segregation, the use of high-sulfur fuels, combined with poor combustion engineering and a number of factors that can cause coating to disappear completely.<\/p>\n\n\n\n

    \"\"<\/a><\/figure>\n\n\n\n

    Lower transition zone:<\/strong> Excessive ovality or damage, the kiln shell causes mechanical stress. This can lead to crushing and displacement of refractories and, ulitmately, may cause a catastrophic twisting of the brick lining. Use of alternative fuels with high alkaline and sulfur content may lead to \u201ccapping\u201d, caused by the infiltration and condensation of alkalis in the brick. This phenomenon can also occur as a result of thermal overload, or from firing with the burner tip coincident with the nose ring or outlet zone. Thermal overload can also cause spalling, a result of thermal shock. Very abrasive \u201cdusty\u201d clinkers \u2013 high in SiO2 \u2013 can cause high abrasion wear on refractories.<\/p>\n\n\n\n

    \"\"<\/a><\/figure>\n\n\n\n

    Cooling zone:<\/strong> The discharge zone is often severely stressed. Abrasive clinker outfall can cause wear on both refractory linings and steel segments, and thermal shock and axial expansion often accelerate refractory wear. Therefore, brick linings should be made of flexible, highly abrasion-resistant brick.<\/p>\n\n\n\n

    \"\"<\/a><\/figure>\n\n\n\n

    Nose ring zone:<\/strong> When steel nose ring segments become worn out, producers have two alternatives: to replace them and reline with brick, or keep them and switch to a castable lining.<\/p>\n\n\n\n

    \"\"<\/a><\/figure>\n\n\n\n

    H\u00f6gan\u00e4s Borgestad can offer you the right refractory solutions for your kiln lining, which are listed on the table below:<\/p>\n\n\n

    \n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
    Area \/ Temperature (\u00b0C)\t<\/th>Processing Conditions\t<\/th>Brick solution
    \nStandard Conditions<\/th>    		Brick solutions
    \nSevere Conditions
    \n<\/th>    		Monolithics solution\t
    \n<\/th>    		Energy Savings Brick solutions<\/th>\n<\/tr>\n<\/thead>\n
    Inlet cone
    \n850 (\u00b0C)<\/td>    		Alkali attack<\/td>Viking 330
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S H-15<\/td>    		Viking 330
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S H-15<\/td>    		Standard Conditions
    \nH\u00d6GAN\u00c4S CAST LC 50AR
    \nH\u00d6GAN\u00c4S CAST LC 75AR
    \nSevere Conditions
    \n
    \nH\u00d6GAN\u00c4S CAST CC S10
    \nCoroTex Pro<\/td>    		H\u00d6GAN\u00c4S CAST LC 50AR (Precasted blocks)
    \n <\/td>\n<\/tr>\n
    Inlet zone
    \n850-1000 (\u00b0C)<\/td>    		Alkali attack<\/td>Viking 330
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S H-15<\/td>    		Alex
    \nViking 450
    \nAlsic 500
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S H-15
    \nCoroTex Pro<\/td>    		<\/td>Viking 330
    \nViking 450
    \nInsulation
    \n
    \nH\u00d6GAN\u00c4S INSUL ME
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S H-15
    \nCoroTex Pro or acid primer<\/td>\n<\/tr>\n
    Safety zone
    \n\u22651200(\u00b0C)<\/td>    		Abrasion
    \nAlkali attack
    \nThermal overload<\/td>    		Victor 60,70,80RK
    \nAlex
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S T<\/td>    		Victor 60,70,80RK
    \nAlex
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S T
    \nCoroTex Pro<\/td>    		<\/td>Viking 330
    \nViking 450
    \nAlex
    \nAlsic 500
    \nSilox 60
    \nInsulation
    \n
    \nH\u00d6GAN\u00c4S INSUL ME
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S H-15
    \nH\u00d6GAN\u00c4S T
    \nCoroTex Pro or acid primer<\/td>\n<\/tr>\n
    Upper Transition zone
    \n1300-1600(\u00b0C)<\/td>    		Redox cycles
    \nInfiltration by clinker liquid phase
    \nAlkali attack
    \nRing formation
    \nBuild ups<\/td>    		Magnus CF02
    \nMortar
    \n
    \nMagnus Bond<\/td>    		Magnus 87 AF
    \nMagnus 90 AF
    \nMortar
    \n
    \nMagnus Bond<\/td>    		<\/td>Magnus 87 AF
    \nInsulation
    \n
    \nH\u00d6GAN\u00c4S INSUL SX
    \nMortar
    \n
    \nMagnus Bond
    \nCoroTex Pro<\/td>\n<\/tr>\n
    Burning zone
    \n1400-1600(\u00b0C)<\/td>    		Thermal overload
    \nRedox conditions
    \nLiquid phase segregation
    \nRing formation
    \nBuild ups<\/td>    		Magnus CF02
    \nMortar
    \n
    \nMagnus Bond
    \n <\/td>    		Magnus 87 AF
    \nMagnus 90 AF
    \nMortar
    \n
    \nMagnus Bond
    \n <\/td>    		<\/td>Magnus 87 AF
    \nInsulation
    \n
    \nH\u00d6GAN\u00c4S INSUL SX
    \nMortar
    \n
    \nMagnus Bond
    \nCoroTex Pro<\/td>\n<\/tr>\n
    Lower transition zone
    \n1300-1600(\u00b0C)<\/td>    		Alkali attack
    \nThermal overload
    \nAbrasive dusty clinkers
    \nRing formation
    \nBuild ups<\/td>    		Magnus 87 AF
    \nMortar
    \n
    \nMagnus Bond
    \n <\/td>    		Magnus 87 AF
    \nMagnus 90 AF
    \nMortar
    \n
    \nMagnus Bond<\/td>    		<\/td>Magnus 87 AF
    \nInsulation
    \n
    \nH\u00d6GAN\u00c4S INSUL SX
    \nMortar
    \n
    \nMagnus Bond
    \nCoroTex Pro<\/td>\n<\/tr>\n
    Cooling zone<\/td>Abrasion
    \nThermal shock
    \nAxial expansion<\/td>    		Victor60, 70, 80RK
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S T<\/td>    		Alsic 500(no liquid phase is allowed to touch it)
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S T<\/td>    		Standard Conditions
    \nH\u00d6GAN\u00c4S CAST LC 801
    \nSevere Conditions
    \n
    \nH\u00d6GAN\u00c4S GUN CC S101
    \nCoroTex Pro
    \nStainless steel anchors<\/td>    		Victor 60,70,80RK
    \nAlsic 500
    \nSilox 60
    \nInsulation
    \n
    \nH\u00d6GAN\u00c4S INSUL ME
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S H-15
    \nH\u00d6GAN\u00c4S T
    \nCoroTex Pro<\/td>\n<\/tr>\n
    Nosering zone
    \n1400-1600(\u00b0C)<\/td>    		Abrasion
    \nThermal shock
    \nAxial expansion<\/td>    		Victor60, 70, 80RK
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S T
    \n <\/td>    		Alsic 500
    \nMortar
    \n
    \nH\u00d6GAN\u00c4S T
    \n <\/td>    		Standard Conditions
    \nH\u00d6GAN\u00c4S CAST LC 75 AR
    \nH\u00d6GAN\u00c4S CAST LC S30
    \nSevere Conditions
    \n
    \nH\u00d6GAN\u00c4S GUN CC S101
    \nCoroTex Pro
    \nStainless steel anchors<\/td>    		H\u00d6GAN\u00c4S CAST CC S10 (Precasted blocks)
    \n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    KILN Achieve world-class production capacity in your kiln In this section we focus on dry-process kilns, as they represent the majority of kilns now in use. The refractory requirements of wet- and semi-dry process kilns are essentially similar after the inlet stage. Today\u2019s dry-process kilns are shorter, without loss of production capacity. Many producers use … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1100,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-nohero.php","meta":{"footnotes":""},"class_list":["post-1545","page","type-page","status-publish"],"yoast_head":"\nKiln - Höganäs Borgestad<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hoganasborgestad.com\/segments\/cement\/kiln\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kiln - Höganäs Borgestad\" \/>\n<meta property=\"og:description\" content=\"KILN Achieve world-class production capacity in your kiln In this section we focus on dry-process kilns, as they represent the majority of kilns now in use. 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