Preparation Of Active Micropowder From Manganese Slag|Professional Manganese Slag Vertical Roller Mill

With the rapid development of my country's industry, a large number of industrial waste residues that are harmful to the environment are produced, such as slag, fly ash, steel slag, manganese slag, liquid slag, phosphorus slag, etc. As a member of industrial waste, manganese slag has the characteristics of general industrial waste, such as large output but narrow distribution. The main reason that hinders its application in building materials industry is the low hydration activity of manganese slag. What is the technical difficulty of preparing active micropowder from manganese slag? Today, the manganese slag vertical roller mill manufacturer will analyze and answer for you.

The technical difficulty of preparing active micropowder from manganese slag: Compared with cement clinker, the chemical composition of manganese slag has higher SiO2, AL2O3, MnO, while the content of CaO is much lower, and contains a lot of unstable free CaO. MgO and Fe2O3, etc. The surface of manganese slag powder is dense, less porous and larger in size. Manganese slag is mainly composed of crystalline slag and part of glass phase, which is the main reason for its low activity. Its main crystalline minerals are: magnesite. Magnesite and Aluminium feldspar. The general opinion is that hydraulic blast furnace slag should have a high glass content. Manganese slag is mainly composed of crystalline minerals such as tobermorite and yellow feldspar and some vitreous body, while ordinary slag is mainly composed of vitreous body and a small amount of crystalline minerals, so the hydraulic activity of manganese slag is lower than that of ordinary slag. Therefore, the main properties and strengths of cement prepared with manganese slag are quite different. The structure is compact and the chemical properties are stable. Most of its hydration activities are latent, and the speed of activity is very slow, so it is difficult to react with water naturally and quickly.

Manganese slag has certain pozzolanic activity and potential hydraulicity, and its activity can be stimulated by appropriate activation methods, and then it can be used in the production and application of building materials. At present, the active excitation methods for manganese slag are roughly divided into two types, namely physical excitation and chemical excitation. Physical excitation refers to the process in which solid substances are crushed under the action of mechanical force, the particle size is reduced, and lattice defects, distortions, and crystallinity of the substances are reduced or even become amorphous substances. It leads to a change in the properties of solid substances, an increase in chemical activity, a reduction in the conditions under which it reacts with other substances, and even induces new chemical reactions.

HLM manganese slag vertical roller mill is a device used to physically stimulate the activity of manganese slag. Under the action of strong mechanical force, the waste slag particles are violently impacted, the internal structure is damaged, and a plasma process may be generated locally accompanied by excited electron emission, which induces The chemical reaction between substances reduces the reaction temperature and activation energy, thus improving the activity of manganese slag. The chemical activator can stimulate the activity of manganese slag and increase its strength after incorporation, but the waste slag has selectivity to the activator.

In my country, due to the high technical difficulty of preparing active micropowder from manganese slag, there has been little research on the performance of manganese slag concrete for a long time. Therefore, manganese slag has not been fully developed and utilized in my country. The HCMilling(Guilin Hongcheng) R&D team applied manganese slag vertical roller mill to the manganese slag preparation technology of active micropowder, so that this waste residue can be used as a mineral admixture in concrete, thus becoming an environmentally friendly material that turns waste into treasure, which is in line with my country's building materials Requirements for the development of green high-performance concrete (GHPC) in the industry. Of course, manganese slag also has broad application prospects in many other industries, such as the production of water-retaining materials and Mn purification.

If you want to know more about the technical difficulty and equipment details for preparing active micropowder from manganese slag, please contact mkt@hcmilling.com or call at +86-773-3568321, HCM will tailor for you the most suitable grinding mill program based on your needs, more details please check www.hcmilling.com.