The Power of Microsilica: Boosting Efficiency in Refractory

{"news_id":8482,"is_preview":0,"news_info":{"id":8482,"company_id":176,"user_id":411,"author":"","website_id":781,"pub_date":"2024-01-18 16:53:02","urla":"the-power-of-microsilica-boosting-efficiency-in-refractory-manufacturing","description":"Microsilica is an indeterminate micropowder with spherical structure, with large specific surface area and high chemical activity, which is widely used in refractory materials.","image_url":"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/4057\/65a88284e02ac\/Fuma_MimePart_5--1-.webp","image_alt":"Fuma_MimePart_5 (1).webp","title":"The Power of Microsilica: Boosting Efficiency in Refractory Manufacturing","content":"<h1 style=\"line-height: 1.6;\"><span style=\"color: #181818; font-size: 18pt;\">The Power of Microsilica: Boosting Efficiency in Refractory Manufacturing<\/span><\/h1>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\"><a href=\"microsilica\" data-page_id=\"19558\" data-page_name=\"Microsilica\uff5cACC\" data-page_type=\"dissociatePage\"><span style=\"text-decoration: underline;\"><span style=\"color: #2dc26b; text-decoration: underline;\"><strong>Microsilica<\/strong><\/span><\/span><\/a> is an indeterminate micropowder with spherical structure, with large specific surface area and high chemical activity, which is widely used in refractory materials. As the microsilica can fill the pores between cement particles, and at the same time generate gels with hydration products, it can also react with alkaline material magnesium oxide to generate gels. <\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp; &nbsp; In cement-based concrete, mortar, exterior wall insulation, grout and refractory castables, the addition of appropriate amount of microsilica can realize excellent performance and economic benefits. Our <a href=\"microsilica\" data-page_id=\"19558\" data-page_name=\"Microsilica\uff5cACC\" data-page_type=\"dissociatePage\"><span style=\"text-decoration: underline; color: #2dc26b;\"><strong>ACC microsilica products<\/strong><\/span><\/a> provide you with excellent cost performance and reliable quality, helping your building materials to achieve outstanding performance levels.<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp;Refractory materials with microsilica to improve its performance has been more than 40 years of history, refractory materials with microsilica &nbsp;will have the following characteristics and performance:<\/span><\/p>\n<p style=\"line-height: 1.6; padding-left: 40px;\"><span style=\"color: #181818;\">1, improve the fluidity of cast refractories, reduce water consumption, so that it is easy to mold, greatly improving production efficiency;.<\/span><\/p>\n<p style=\"line-height: 1.6; padding-left: 40px;\"><span style=\"color: #181818;\">2, because of its ultra-micro-structure of the gap-filling effect, the denseness and strength of the refractory material to get a substantial increase;.<\/span><\/p>\n<p style=\"line-height: 1.6; padding-left: 40px;\"><span style=\"color: #181818;\">3, microsilica ash with high activity, in the presence of Al2O3 components under the premise, easier to generate mullite phase, so that the high temperature strength of refractory materials, thermal shock stability significantly improved.<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp;Microsilica is a commonly used micropowder in castables. Microsilica with small particle size can fill the pores between particles in the castables and reduce the water consumption of the castables; microsilica has a standard spherical structure, which has the \"rolling ball effect\". When it is filled between particles, the relative sliding friction between particles is changed to rolling friction, which reduces the friction between particles, resulting in the viscosity of the castables being reduced and the fluidity being improved.<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"text-decoration: underline; color: #2dc26b;\"><strong><span style=\"text-decoration: underline;\"><a style=\"color: #2dc26b; text-decoration: underline;\" href=\"https:\/\/www.allcarbon.com.cn\/undensified-microsilica\" data-page_id=\"0\" data-page_name=\"\" data-page_type=\"\">ACC&reg; undensified microsilica<\/a><\/span><\/strong><\/span><\/p>\n<blockquote>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">ACC&reg; undensified microsilica is a by-product of the production of ferrosilicon alloys or silicon metal, with SiO\u2082 content range from 85% to 96%, bulk density around 300-400kg\/m&sup3;, and light grey color.<\/span><\/p>\n<\/blockquote>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\"><a href=\"https:\/\/www.allcarbon.com.cn\/undensified-microsilica\" data-page_id=\"0\" data-page_name=\"\" data-page_type=\"\"><img src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/2164\/65a87ed59d85c\/QQ%E5%9B%BE%E7%89%8720240117152813.webp\" alt=\"&nbsp;ACC G92U Microsilica \" width=\"300\" data-resolution=\"3264*2448\" \/><\/a><a href=\"https:\/\/www.allcarbon.com.cn\/undensified-microsilica\" data-page_id=\"0\" data-page_name=\"\" data-page_type=\"\"><img src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/4274\/65a87ed5b2c46\/QQ%E5%9B%BE%E7%89%8720240117152806.webp\" alt=\"&nbsp;ACC G94U Microsilica \" width=\"300\" data-resolution=\"3264*2448\" \/><\/a><a href=\"https:\/\/www.allcarbon.com.cn\/undensified-microsilica\" data-page_id=\"0\" data-page_name=\"\" data-page_type=\"\"><img src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/8740\/65a87ed5b5bfe\/G96U-1-.webp\" alt=\"&nbsp;ACC G96U Microsilica \" width=\"300\" data-resolution=\"3264*2448\" \/><\/a><img src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/9488\/65a87ed570a0f\/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20240117144724.webp\" alt=\"&nbsp;ACC Microsilica Certificalc of Analysis \" width=\"300\" data-resolution=\"459*581\" \/><\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp;&nbsp;Due to its special production process, microsilica has an amorphous crystal structure, which is easy to form broken bonds on the surface of the particles. Due to the existence of broken bonds, microsilica in aqueous solution can easily adsorb OH- in water to form Si-OH, and dissociate into Si-O- and H+ in aqueous solution. Due to its relatively small particle size (micron level), microsilica can easily form a colloidal structure with a double electric layer in aqueous solution. Highly active microsilica can adsorb OH- in aqueous solution, forming a large number of hydroxyl groups on the surface of its particles. <\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">In the low-temperature maintenance, the microsilica can be dehydrated to form -Si-O-Si-bonds between the particles, which improves the mold release strength of the castables. Microsilica can become liquid phase at high temperature, which reduces the viscosity of mass transfer between particles, and thus enhances the mass transfer rate and promotes the sintering between particles. Therefore, the castables doped with microsilica can promote the sintering between the matrix in the castables at 800\u2103, which enhances the interlocking bonding ability between the particles, and improves the mid-temperature strength of the castables.<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\"><img src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/4966\/65a87ed59a765\/Fuma_MimePart_5.webp\" alt=\"Application of microsilica in refractory materials \" width=\"500\" height=\"300\" data-resolution=\"840*480\" \/><\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp;&nbsp;According to the different properties of refractory raw materials, orthogonal design, through the comparison test, select the best formula, microsilica manufacturers of technical experts can assist refractory factory to carry out the work of coordinated nature. Refractories usually use undensified microsilica. In addition to its wide use in castables for non-crystallized refractories, it is now also being used in a large number of applications in electrofused and sintered refractories. <\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">For example, it is used as low cement castable: low cement castable is a new type of high-performance refractory castable developed in the 1970s, which was firstly developed successfully by France. It is widely used in various industrial high temperature furnaces, with good technical and economic results. 1983 Pittsburgh City, the United States general refractory company will be used for low cement castables for blast furnace main iron out of the ditch ditch cover lining, the service life of the original ordinary castables is three times, from 75-100 furnaces up to 300-400 furnaces.<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp;&nbsp;Both low cement castables and ordinary castables use calcium aluminum cement. However, after the former is equipped with microsilica and high-efficiency water reducing agent, the amount of cement added is 4-8%, and the amount of water added is only 5-8%, which is 15-20% of the amount of cement and 10-15% of the amount of water added than the latter, and there is a substantial reduction. Low-cement castables not only save 50-70% of expensive aluminate cement, but also the performance of microsilica for refractory materials has been greatly improved.<\/span><\/p>\n<p style=\"line-height: 1.6; padding-left: 40px;\"><span style=\"color: #181818;\"><img style=\"float: right;\" src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/1507\/65a87ed591435\/P1%E8%80%90%E6%9D%90-1-.webp\" alt=\"Application of microsilica in refractory materials \" width=\"300\" data-resolution=\"420*310\" \/><\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">The test results of the General Research Institute of Architecture of the Ministry of Metallurgy on low cement castables are as follows:<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp;&nbsp;(1)Porosity and pore structure tuning: low cement castables and ordinary castables in 1400 \u2103 heating after the apparent porosity comparison, the former is 20.4%, while the latter is 26.4%, an increase of nearly 30%. The total porosity in low cement castables is lower than that in ordinary castables as determined by the pressure pump method. The increase was nearly 40% in ordinary castables after heating at 800&deg;C compared to 110&deg;C drying. From the pore size distribution, the pore size in ordinary castables greater than 100A is 2-3 times of that in low cement castables, and the pore size in less than 1000A is only 30-50% of that in low cement castables.<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">&nbsp;&nbsp;(2)Refractory materials with microsilica strength change characteristics: low cement castables strength regardless of low, medium and high temperature stage can continue to grow, while the ordinary castables have a significant decline in the strength of the medium temperature. At present, refractory products, ceramic dampers and ceramic inner cylinders have been widely used. And according to the available information, low cement castables are widely used in foreign countries, and have been applied in coke oven, sintering, iron making, steel making, steel rolling, non-ferrous metallurgy, petroleum and chemical industry, cement, glass ceramics and power generation and other industries.<\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\"><img src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0118\/6110\/65a87ed5ad70e\/Fuma_MimePart_6.webp\" alt=\"Application of microsilica in refractory materials \" width=\"500\" height=\"300\" data-resolution=\"640*402\" \/><\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #181818;\">We proudly announce that in the field of refractory applications, many of our collaborative clients have chosen our ACC microsilica and reported significant success. We adhere to our commitment to product quality ensuring that each order represents outstanding performance and superior quality. Trust in us as we continue to provide excellent&nbsp;&nbsp;microsilica. We look forward to our collaboration, delivering exceptional service and top-tier products for you.<\/span><\/p>\n<p style=\"line-height: 1.6;\">&nbsp;<\/p>","discuss":0,"seo_title":"The Power of Microsilica: Boosting Efficiency in Refractory","seo_keyword":"Refractory,microsilica,Silica fume,white Silica fume,","seo_describe":"Explore the application of microsilica in refractory materials, highlighting its ability to fill pores between cement particles and generate gels with alkaline materials. Microsilica improves fluidity, denseness, strength, and thermal shock stability of refractories","track_code":"","viewer":"","source_copy_id":0,"sort":52,"status":0,"data_time":"2024-01-18 16:54:15","create_time":"2024-01-18 09:31:42","update_time":"2025-04-02 09:56:43","type_items":[{"id":2204,"website_id":781,"name":"Microsilica","urla":""}],"tag_items":[]}}

<h1 style="line-height: 1.6;"><span style="color: #181818; font-size: 18pt;">The Power of Microsilica: Boosting Efficiency in Refractory Manufacturing</span></h1>
<p style="line-height: 1.6;"><span style="color: #181818;"><a href="microsilica" data-page_id="19558" data-page_name="Microsilica｜ACC" data-page_type="dissociatePage"><span style="text-decoration: underline;"><span style="color: #2dc26b; text-decoration: underline;"><strong>Microsilica</strong></span></span></a> is an indeterminate micropowder with spherical structure, with large specific surface area and high chemical activity, which is widely used in refractory materials. As the microsilica can fill the pores between cement particles, and at the same time generate gels with hydration products, it can also react with alkaline material magnesium oxide to generate gels. </span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">    In cement-based concrete, mortar, exterior wall insulation, grout and refractory castables, the addition of appropriate amount of microsilica can realize excellent performance and economic benefits. Our <a href="microsilica" data-page_id="19558" data-page_name="Microsilica｜ACC" data-page_type="dissociatePage"><span style="text-decoration: underline; color: #2dc26b;"><strong>ACC microsilica products</strong></span></a> provide you with excellent cost performance and reliable quality, helping your building materials to achieve outstanding performance levels.</span></p>
<p style="line-height: 1.6;"><span style="color: #181818;"> Refractory materials with microsilica to improve its performance has been more than 40 years of history, refractory materials with microsilica  will have the following characteristics and performance:</span></p>
<p style="line-height: 1.6; padding-left: 40px;"><span style="color: #181818;">1, improve the fluidity of cast refractories, reduce water consumption, so that it is easy to mold, greatly improving production efficiency;.</span></p>
<p style="line-height: 1.6; padding-left: 40px;"><span style="color: #181818;">2, because of its ultra-micro-structure of the gap-filling effect, the denseness and strength of the refractory material to get a substantial increase;.</span></p>
<p style="line-height: 1.6; padding-left: 40px;"><span style="color: #181818;">3, microsilica ash with high activity, in the presence of Al2O3 components under the premise, easier to generate mullite phase, so that the high temperature strength of refractory materials, thermal shock stability significantly improved.</span></p>
<p style="line-height: 1.6;"><span style="color: #181818;"> Microsilica is a commonly used micropowder in castables. Microsilica with small particle size can fill the pores between particles in the castables and reduce the water consumption of the castables; microsilica has a standard spherical structure, which has the "rolling ball effect". When it is filled between particles, the relative sliding friction between particles is changed to rolling friction, which reduces the friction between particles, resulting in the viscosity of the castables being reduced and the fluidity being improved.</span></p>
<p style="line-height: 1.6;"><span style="text-decoration: underline; color: #2dc26b;"><strong><span style="text-decoration: underline;"><a style="color: #2dc26b; text-decoration: underline;" href="https://www.allcarbon.com.cn/undensified-microsilica" data-page_id="0" data-page_name="" data-page_type="">ACC® undensified microsilica</a></span></strong></span></p>
<blockquote>
<p style="line-height: 1.6;"><span style="color: #181818;">ACC® undensified microsilica is a by-product of the production of ferrosilicon alloys or silicon metal, with SiO₂ content range from 85% to 96%, bulk density around 300-400kg/m³, and light grey color.</span></p>
</blockquote>
<p style="line-height: 1.6;"><span style="color: #181818;"><a href="https://www.allcarbon.com.cn/undensified-microsilica" data-page_id="0" data-page_name="" data-page_type=""><img src="https://oss.matchpages.cn/matchpages/common/2024/0118/2164/65a87ed59d85c/QQ%E5%9B%BE%E7%89%8720240117152813.webp" alt=" ACC G92U Microsilica " width="300" data-resolution="3264*2448" /></a><a href="https://www.allcarbon.com.cn/undensified-microsilica" data-page_id="0" data-page_name="" data-page_type=""><img src="https://oss.matchpages.cn/matchpages/common/2024/0118/4274/65a87ed5b2c46/QQ%E5%9B%BE%E7%89%8720240117152806.webp" alt=" ACC G94U Microsilica " width="300" data-resolution="3264*2448" /></a><a href="https://www.allcarbon.com.cn/undensified-microsilica" data-page_id="0" data-page_name="" data-page_type=""><img src="https://oss.matchpages.cn/matchpages/common/2024/0118/8740/65a87ed5b5bfe/G96U-1-.webp" alt=" ACC G96U Microsilica " width="300" data-resolution="3264*2448" /></a><img src="https://oss.matchpages.cn/matchpages/common/2024/0118/9488/65a87ed570a0f/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20240117144724.webp" alt=" ACC Microsilica Certificalc of Analysis " width="300" data-resolution="459*581" /></span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">  Due to its special production process, microsilica has an amorphous crystal structure, which is easy to form broken bonds on the surface of the particles. Due to the existence of broken bonds, microsilica in aqueous solution can easily adsorb OH- in water to form Si-OH, and dissociate into Si-O- and H+ in aqueous solution. Due to its relatively small particle size (micron level), microsilica can easily form a colloidal structure with a double electric layer in aqueous solution. Highly active microsilica can adsorb OH- in aqueous solution, forming a large number of hydroxyl groups on the surface of its particles. </span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">In the low-temperature maintenance, the microsilica can be dehydrated to form -Si-O-Si-bonds between the particles, which improves the mold release strength of the castables. Microsilica can become liquid phase at high temperature, which reduces the viscosity of mass transfer between particles, and thus enhances the mass transfer rate and promotes the sintering between particles. Therefore, the castables doped with microsilica can promote the sintering between the matrix in the castables at 800℃, which enhances the interlocking bonding ability between the particles, and improves the mid-temperature strength of the castables.</span></p>
<p style="line-height: 1.6;"><span style="color: #181818;"><img src="https://oss.matchpages.cn/matchpages/common/2024/0118/4966/65a87ed59a765/Fuma_MimePart_5.webp" alt="Application of microsilica in refractory materials " width="500" height="300" data-resolution="840*480" /></span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">  According to the different properties of refractory raw materials, orthogonal design, through the comparison test, select the best formula, microsilica manufacturers of technical experts can assist refractory factory to carry out the work of coordinated nature. Refractories usually use undensified microsilica. In addition to its wide use in castables for non-crystallized refractories, it is now also being used in a large number of applications in electrofused and sintered refractories. </span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">For example, it is used as low cement castable: low cement castable is a new type of high-performance refractory castable developed in the 1970s, which was firstly developed successfully by France. It is widely used in various industrial high temperature furnaces, with good technical and economic results. 1983 Pittsburgh City, the United States general refractory company will be used for low cement castables for blast furnace main iron out of the ditch ditch cover lining, the service life of the original ordinary castables is three times, from 75-100 furnaces up to 300-400 furnaces.</span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">  Both low cement castables and ordinary castables use calcium aluminum cement. However, after the former is equipped with microsilica and high-efficiency water reducing agent, the amount of cement added is 4-8%, and the amount of water added is only 5-8%, which is 15-20% of the amount of cement and 10-15% of the amount of water added than the latter, and there is a substantial reduction. Low-cement castables not only save 50-70% of expensive aluminate cement, but also the performance of microsilica for refractory materials has been greatly improved.</span></p>
<p style="line-height: 1.6; padding-left: 40px;"><span style="color: #181818;"><img style="float: right;" src="https://oss.matchpages.cn/matchpages/common/2024/0118/1507/65a87ed591435/P1%E8%80%90%E6%9D%90-1-.webp" alt="Application of microsilica in refractory materials " width="300" data-resolution="420*310" /></span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">The test results of the General Research Institute of Architecture of the Ministry of Metallurgy on low cement castables are as follows:</span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">  (1)Porosity and pore structure tuning: low cement castables and ordinary castables in 1400 ℃ heating after the apparent porosity comparison, the former is 20.4%, while the latter is 26.4%, an increase of nearly 30%. The total porosity in low cement castables is lower than that in ordinary castables as determined by the pressure pump method. The increase was nearly 40% in ordinary castables after heating at 800°C compared to 110°C drying. From the pore size distribution, the pore size in ordinary castables greater than 100A is 2-3 times of that in low cement castables, and the pore size in less than 1000A is only 30-50% of that in low cement castables.</span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">  (2)Refractory materials with microsilica strength change characteristics: low cement castables strength regardless of low, medium and high temperature stage can continue to grow, while the ordinary castables have a significant decline in the strength of the medium temperature. At present, refractory products, ceramic dampers and ceramic inner cylinders have been widely used. And according to the available information, low cement castables are widely used in foreign countries, and have been applied in coke oven, sintering, iron making, steel making, steel rolling, non-ferrous metallurgy, petroleum and chemical industry, cement, glass ceramics and power generation and other industries.</span></p>
<p style="line-height: 1.6;"><span style="color: #181818;"><img src="https://oss.matchpages.cn/matchpages/common/2024/0118/6110/65a87ed5ad70e/Fuma_MimePart_6.webp" alt="Application of microsilica in refractory materials " width="500" height="300" data-resolution="640*402" /></span></p>
<p style="line-height: 1.6;"><span style="color: #181818;">We proudly announce that in the field of refractory applications, many of our collaborative clients have chosen our ACC microsilica and reported significant success. We adhere to our commitment to product quality ensuring that each order represents outstanding performance and superior quality. Trust in us as we continue to provide excellent  microsilica. We look forward to our collaboration, delivering exceptional service and top-tier products for you.</span></p>
<p style="line-height: 1.6;"> </p>