Silica fume is fine particles from cooling high SiO2 of submerged arc furnace in ferrosilicon or silicon metal production process. The silica fume is filtered and collected by collector. General micro-silica fume’s color is between light gray and dark gray. Its color depends on the carbon and iron oxide content. The higher the carbon content is, the darker the color will become. Color of encryption silica fume is darker than color of natural silica fume.

Fumed silica particles in the diffusion depth and increases the packing density of concrete, and the function can be pure high rock, chips and coke products reduced complex fusion reactions. Throughout this rock, quartz and coal to 1750 ℃, the reaction to produce reduced carbon monoxide, which is not stable for more than 2160 ° 100 ° 100, 1100 to pass most of the gasification sky conditions and pain, cement and anti-00kg / m 3 of water, public transport Micro-gray rock density usually comes with a small long-distance transport is less efficient, much more to stop the immediate response without the artificial use of pain compounds for metal powder supplier.

STEAM rock types, the former state tobacco chert, flint and provisions condensed smoke. Micro-gray rock, country, dust is collected directly from the cylinder, concrete mixers and efficient working environment of dust, loose rocks of low Haze 150-2 bag. Trying to solve the country of micro-STEAM gray chert source, without large distances and low efficiency of issues, the development of encryption technology to increase the density of micro-Flint Flint smoke free. This method allows baseline gray-micro-Flint smoke, and the book to bring together a number of particles under the influence of wind flow, which increased 500 - 700 kg/m3 TOBACCO stones to lose weight, promote use of encryption, the micro-particles of silica fume particles is weak cohesion, more cement mixing process is easy to remove the particles contained in the background condensed microsilica particles has been generalized and heat distribution.

Higher SiO 2, no pollution, the greater the amount of silicon in a fog of flint, and the other is low. TOBACCO silicon content> 85% of Air entraining agent for concrete stone smoking carbon adsorption, fire damage, such as <= 7%. Again, the greatness of the steam particles 45 filtered 10% of the large rock. SMOKE flint 15% replacement of cement, concrete, particles of cement and broken rock 1:2000000 FUME mist extremely thin dust silicon material ratio, the strength of the concrete to increase the strength of bonding between cement paste and aggregates, moisture increases fresh water, because of the operation, the total amount of the surface, increasing the transition zone between the surface and reduce the density of the thickness transition zone environment.

Performance improvement of silicon powder on hardened concrete is mainly attributed to the improvement of the interface structure and composition. The paste and aggregate bond strength increase, thereby eliminating the different compound groups in concrete weak link. Concrete has properties of composite material. The aggregate particles play an enhanced role in concrete. Silica fume’s particle size is 100 times smaller than cement particles. It is filed in the gap of cement particles. The effect is the same to the aggregate and it can increase the density of concrete. However, one of the prerequisites for silica fume’s effects is that it should be well dispersed in concrete.Source:http://www.mhcmp.com