http://www.allminmetal.com/blog/ Mon, 22 Mar 2010 20:9:41 +0800 http://www.svoo.net zh-CN http://www.allminmetal.com/blog/article.asp?/a158.html http://www.allminmetal.com/blog/article.asp?/a158.html#comment Mon, 22 Mar 2010 20:9:41 +0800 admin http://www.allminmetal.com/blog/article.asp?/a158.html And, preferably, is to let the hair hang down naturally back better, to look inside the hair pulled straight Oh, it will be more. If you can pull someone around to help pull the best. Lawin it should not run into the water, so that come to naught pull.

]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=158 http://www.allminmetal.com/blog/article.asp?/a157.html http://www.allminmetal.com/blog/article.asp?/a157.html#comment Fri, 4 Dec 2009 22:0:28 +0800 admin http://www.allminmetal.com/blog/article.asp?/a157.html Chlorine-free,microsilica ，silica fume,GGBFS ，GGBS ，Ground Granulated Blast Furnace Slag, no sodium or less sodium and durability of concrete will not have a negative impact on the slag - cinder compound activating agent, thereby achieving the slag mixture in the production of the slow introduction of a certain number of thermal power plant without reducing cold cinder the quality of slag. Experimental study on the use of orthogonal excitation of this compound on slag - cinder early strength cement mortar compound the effects of X-ray diffraction, thermal analysis, methods such as scanning electron microscopy study after adding activating agent slag - cinder composite cement hydration process and microstructure analysis of the excitation mechanism. The results show that: The activating agent can not only improve the slag - cinder early strength cement compound, GGBFS,and the latter can the steady development of strength. when coal and other the quality of the proportion of slag to replace 25% do not reduce the slag - cement cinder 28d composite strength. add after the fine grinding of cement cinder variation of flow properties can be improved through the addition of superplasticizer.GGBFS

]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=157 http://www.allminmetal.com/blog/article.asp?/a156.html http://www.allminmetal.com/blog/article.asp?/a156.html#comment Thu, 26 Nov 2009 21:59:10 +0800 admin http://www.allminmetal.com/blog/article.asp?/a156.html 7, increasing the concrete compressive, tensile, bending, shear strength, easy preparation of high-strength concrete.



8, water remains unchanged, it can be prepared plastic concrete, to avoid steel-intensive, vibrated to poor quality problems.



9, in the case of the same amount of water can make concrete flow pattern was shaped into the mold to reduce the concrete pump, piping and die wear and tear and prolong their useful life.



10, can be prepared masonry, plastering cement mortar, and low-grade cement. To meet the strength required in the circumstances, not only can save 30-70% of the cement, while increasing the construction operability.Microsilica



11, applicable to the production of environmentally compatible materials and high-performance cement-based concrete admixture.

]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=156 http://www.allminmetal.com/blog/article.asp?/a155.html http://www.allminmetal.com/blog/article.asp?/a155.html#comment Fri, 20 Nov 2009 21:56:38 +0800 admin http://www.allminmetal.com/blog/article.asp?/a155.html 1, save 30-70% of cement consumption (including cement mortar), reduce the cost of concrete. The average overall costs per cubic meter of concrete reduces about 10-23 yuan.
     
    2, can significantly reduce the secretion of concrete water, to improve the workability of concrete.
     
    3, can significantly reduce the hydration heat of concrete to improve concrete workability, reduce segregation and bleeding, reduce mass concrete temperature changes and stress, to resist cracks due to temperature and is especially suitable for the preparation of mass concrete.
     
    4, we can use the form of cementing materials in concrete to improve the concrete pore structure, so that pore size can be specified and are oriented to improve the anti-doping nature of concrete, freeze-thaw resistance and durability.
     
    5, effectively improve the concrete anti-corrosion properties of sea water and fresh water, resistance to sulfate corrosion. Particularly suitable for anti-sea engineering, underground engineering and road works.
     
    6, can resist the alkali-aggregate reaction, significantly improve the ability of concrete alkali aggregate reaction.
     
    7, increasing the concrete compressive, tensile, bending, shear strength, easy preparation of high-strength concrete.
     
    8, water remains unchanged, it can be prepared plastic concrete, to avoid steel-intensive, vibrated to poor quality problems.
     
    9, in the case of the same amount of water can make concrete flow pattern was shaped into the mold to reduce the concrete pump, piping and die wear and tear and prolong their useful life.
     
    10, can be prepared masonry, plastering cement mortar, and low-grade cement. To meet the strength required in the circumstances, not only can save 30-70% of the cement, while increasing the construction operability.
     
    11, applicable to the production of environmentally compatible materials and high-performance cement-based concrete admixture.

]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=155 http://www.allminmetal.com/blog/article.asp?/a154.html http://www.allminmetal.com/blog/article.asp?/a154.html#comment Fri, 13 Nov 2009 21:50:13 +0800 admin http://www.allminmetal.com/blog/article.asp?/a154.html Blast furnace slag;; blast furnace slag (ggbs) is the smelting of pig iron from the blast furnace as a slag discharged. In the blast furnace pig iron, the raw material from the blast furnace to join, in addition to iron ore and fuel (coke), but also by adding flux. When the furnace temperature reached 1400 a 1600 ℃, the flux occurred with the high-temperature reaction of iron ore pig iron and slag. Blast furnace slag from the gangue, ash, flux and other impurities can not enter in the composition of pig iron, is a fusible mixture. From the chemical composition point of view, portland blast furnace slag are of quality materials. 1t per pig iron production, blast furnace slag as the emissions of ore grade and metallurgical methods vary. For example, when the use of depleted iron ore, per ton of pig iron output of 1.0 a 1.2t blast furnace slag; with rich iron ore, each t only the output of pig iron blast furnace slag 0.25t. Mineral and iron because of modern technology, the improvement of blast furnace slag per ton of pig iron output volume has declined dramatically.
As the iron species and composition of raw materials and changes in the operation of process factors, the composition and nature of the slag are also different. In accordance with the varieties of pig iron smelting, blast furnace slag can be divided into cast iron slag, steel slag and special pig iron pig iron slag. Accordance with the chemical composition of blast furnace slag in the amount of alkaline oxides. Blast furnace slag slag can be divided into basic, neutral and acid slag slag.
]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=154 http://www.allminmetal.com/blog/article.asp?/a153.html http://www.allminmetal.com/blog/article.asp?/a153.html#comment Tue, 10 Nov 2009 19:22:7 +0800 admin http://www.allminmetal.com/blog/article.asp?/a153.html Slag quality requirements
National Standards (GB/203-94) of the granulated blast furnace slag of the quality requirements are as follows:
1, granulated blast furnace slag mass coefficient K should not be less than 1.2; (enterprise internal control standards are not less than 1.6)
2, granulated blast furnace slag content of manganese compounds in order to MnO shall not exceed 4%, manganese alloy granulated blast furnace slag of MnO to allow the relaxation to 15%; sulfide content (in terms of sulfur) can not exceed 3%; fluoride content of (as fluorine dollars) shall not be greater than 2%;
3, granulated blast furnace slag loose capacity of not more than 1.2kg / L, maximum diameter of not more than 100mm, more than 10mm particle content (by weight) is not greater than 8%;
4, granulated blast furnace slag shall not be mixed with foreign inclusions, such as iron tip mud, without the massive quench slag, etc.;
5, slag without drying before the period of storage into the grains from the moment when liquid cooling is not appropriate for 3 months. ggbfs

  

Slag powder Quality Standard
National Standards (GB/T18045-2000) <used in cement and concrete in the granulated blast furnace slag powder "provides as follows:
1, granulated blast furnace slag powder (referred to as slag) Definitions; GB/T203 meet standard requirements of the granulated blast furnace slag by drying, grinding (or adding a small amount of gypsum grinding together) to achieve a considerable fineness, and in line with the corresponding activity index powder, slag grinding Tokimitsu Xu adding grinding aids, by adding the amount of not more than 1% of the quality of slag powder;
2, slag powder density of not less than 2.8g/cm3; than the surface area of not less than 350m2/kg; (corporate internal control standards: not less than 400m2/kg.)
3, slag powder is divided into three, S105, S95, S75, their corresponding activity index 7 days is not lower than 95%, 75% and 55%, 28 days is not less than 105%, 95% and 75%, mobile Ratio is less than 85%, 90% and 95%.
4, slag powder moisture content less than 1.0%. 5, sulfur trioxide is not greater than 4.0%.
6, ion is not more than 0.02%. 7, loss on ignition is not more than 3.0%.

  

Main features:

● reduce the slump loss ● ● greatly enhance the durability of concrete in concrete significantly enhance the role of
● Excellent ● Reinforced Concrete alkali-aggregate inhibitors, corrosion resistance ● improve the pumpability of concrete ● reduce the bleeding of concrete
]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=153 http://www.allminmetal.com/blog/article.asp?/a152.html http://www.allminmetal.com/blog/article.asp?/a152.html#comment Sat, 7 Nov 2009 0:43:25 +0800 admin http://www.allminmetal.com/blog/article.asp?/a152.html
  Blast furnace slag can be used a variety of processes with multiple applications processed into a valuable material. Processed into slag aggregates can replace the natural sand and gravel, as a concrete, reinforced concrete and prestressed concrete under No. 500 aggregate, the working temperature of 700 ℃ below the heat-resistant concrete aggregate, require abrasion resistance, non-slip of the highway, the car field, runway and other support materials, railway ballast, fill the trenches and in the foundation cushion fillers, sewage treatment and other media. Blast furnace slag with plenty of water quenching, the vitreous can be made with water-based fine-grained slag, the water potential performance of a hard gel, in the cement clinker, lime, gypsum, etc. under the action of stimulating agents, indicating water PS coagulation performance, and high quality raw material for concrete. China's cement production 70% a 80% mixed with different amounts of water residue. Slag can also be subjects for insulation material, wet grinding and wet grinding slag, concrete, and road works of fine aggregate; soil improvement materials.
Hot-melt expansion of slag can be processed into a porous slag by crushing, screening became concrete light orthopedics, but also includes processed into porous smooth surface, particles of varying sizes - expandable beads. Expansion beads are high-quality lightweight aggregate concrete than with the expansion of slag cement can save 20%; can be made of cement mixed materials, road materials, insulation materials.
Blowing with compressed air or high pressure steam injection hot-melt slag flow, slag can be prepared from cotton. As insulation, sound absorption, fireproofing materials, and so on. 
  Blast furnace slag can also serve as cast stone, glass, fertilizer, enamel, ceramic and other raw materials.
]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=152 http://www.allminmetal.com/blog/article.asp?/a151.html http://www.allminmetal.com/blog/article.asp?/a151.html#comment Mon, 2 Nov 2009 23:9:23 +0800 admin http://www.allminmetal.com/blog/article.asp?/a151.html Silica fume in 5 main function 1, the control of concrete materials, segregation and bleeding, reduce or avoid the emergence of concrete cellular, Ma face, weak interlayer, skin defects such as cracks and milk. 2 and improve the compressive strength of concrete, experimental proof of silica powder can greatly increase the strength of concrete. 3, to improve the durability of concrete to improve concrete's impermeability, frost resistance, abrasion resistance and corrosion resistance of 4 to improve the anti-carbonization of concrete for the reinforced concrete, mixed with silica powder can increase inequality between the matrix and the reinforcement The bond strength, but also enhance the capacity of steel resistance to corrosion. 5, to improve the mobility and dense refractories increased the levels of refractory high-temperature strength and thermal shock resistance.]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=151 http://www.allminmetal.com/blog/article.asp?/a150.html http://www.allminmetal.com/blog/article.asp?/a150.html#comment Thu, 29 Oct 2009 21:4:8 +0800 admin http://www.allminmetal.com/blog/article.asp?/a150.html Micro-silica component indices Popularization and application of micro-silica, marking China's construction industry and ceramic production into high-tech refractory period, 80 years, due to the application of micro-silica powder has also led to other applications, with the development of the market changes, The construction industry, ceramics and refractories demand increasing, micro silica fume of its special physical and chemical properties will be subject to City Market is more pro-gaze, very broad application prospects. In recent years, micro-silica fume in the construction and building materials industry applications, to achieve Very good results, its use more and more broad. After the infiltration of silica fume cement concrete can well fill in the gaps among the cement, so that more micro-density slurry, in addition, With the dissociated Ca (OH) combine to form a stable calcium silicate hydrate 2CaO.SiO2. H 2O, the hydrates, condensate Gel strength is higher than Ca (OH) crystals, mainly reflected in: (1) to increase its strength. Of the concrete compressive strength, flexural strength greatly increased, infiltration of 5-10% silica fume, Compressive strength can increase 10-30%, flexural strength increased by 10% or more; (2) increasing the density. Impermeability performance 5-18 times more resistant capabilities increased by 4 times: (3) Frost Resistance: micro silica fume concrete in 300-500 times through the cycle of fast-freeze solution, the relative elastic modulus Reduced 10-20%, while the ordinary concrete by 25-50 cycles, the relative elastic modulus reduced to 30-73% ; (4) The early strength of: micro silica fume concrete to shorten the induction period, with early strength of character; (5) Anti-abrasion, cavitation control of: micro silica fume concrete abrasion-resistant than ordinary concrete ability to increase 0.5-2.5 Times, anti-cavitation ability to increase 3-16 times.

]]> http://www.allminmetal.com/blog/feed.asp?act=rss2-comm&logID=150 http://www.allminmetal.com/blog/article.asp?/a149.html http://www.allminmetal.com/blog/article.asp?/a149.html#comment Wed, 28 Oct 2009 22:5:58 +0800 admin http://www.allminmetal.com/blog/article.asp?/a149.html Silica fume silica fume, also known as silica fume, microsilica or silica fume. Division I professional production of 92 - 97% silica fume silica fume (micro silica / silica / silica fume), widely used in refractory material and concrete industries. Company has established its own silica fume silica fume (microsilica / micro silica / silica fume) production base, the current annual output of silica fume (microsilica / silica / silica fume) scale of 10,000 tons, the scale is still expanding . Since the collection of more advanced, my company's "micro-silica powder" (microsilica / silica / silica fume) and high content of SiO2, and other indicators are also extremely good, micro-silica fume (microsilica / silica / silica fume ) product quality and stability. Yet developed a special micro-silica refractories (microsilica / silica / silica fume), the SiO2 content of 94% or more to ensure generally maintained at around 97%, to the use of micro-silica refractories (microsilica / silica / silica fume) and national-level criteria. My company Silica Fume (microsilica / silica / silica fume) concentrations are found in 92%, and 70% in the 0.1um particle size below a maximum of not more than 0.3um. Silica Fume (microsilica / silica / silica fume) is widely used, such as Ertan power station, Higuchi power stations, water conservancy and hydropower projects such as the Qinghai-Tibet railway, railways, civil construction, bridges, refractory materials, cement and precast, paints, paint, rubber, etc., well received by the users.
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