Concrete additives are chemicals and materials blended into the cement to alter its performance. Additives provide a specific benefit for a particular job. Liquid additives used during cement grinding improve the strength of the cement. Concrete bonding additive bonds old concrete to new for interior and exterior jobs like wall capping and resurfacing. Color additives give concrete a stylish look. Whatever the job, concrete additives help get it done. Cold weather concrete has superior properties to concrete placed in hot weather. At low temperatures, though, concrete sets and gains strength more slowly because the cement doesn't hydrate as fast. Setting time is increased about one-third for each 10 degree decrease in concrete temperature down to 40 degrees Fahrenheit. Accelerating admixtures can help to offset these effects of low temperatures on setting and strength gain. They should meet the requirements of ASTM C 494, Standard Specifications for Chemical Admixtures for Concr...

Sinofloc has developed a wide range of polymers , both in dry powder and liquid emulsion forms, to cover the vast majority of existing conditions within the various industries (water treatment, mining processing, oil & gas etc.). Sinofloc polyacrylamides range from cationic to non-ionic and anionic in nature, and the selection of the best product depends on several parameters. General guidelines regarding typical product selection for a given application used in a specific industrial can be found on the individual product technical data sheets, as well as in the sections regarding the industries we serve. However these are not to be taken literally. In order to select the optimum product for a specific application, it is essential that laboratory testwork followed by plant trials are carried out. Initial laboratory testwork will give an indication of the best product and approximate dosage, which will then need to be confirmed with more accuracy by running plant trials...

The major mineral processing industries we supply our products to are as follows:  Coal Gold/Silver Copper Lead/Zinc Alumina Uranium  Iron/Steel Titanium Dioxide Nickel Phosphates Potassium Manganese Sodium Vanadium Oil Sand  In most mineral processes where there is a flocculant requirement for a either sedimentation or centrifugation application then a high molecular weight product is desired. The anionic product range offers ultra high molecular weight products ensuring maximum performance and cost efficiency for sedimentation and centrifugation applications.  The extensive product range of flocculants and coagulants includes a wide range of anionic /cationic charged products, all at varying molecular weights, so that all applications in the mineral processing industry are catered for.  Apart what we illustrated in Polyacrylamide for Mineral ProcessingⅠ,Summaries of the major mineral processing industries we supply our products to are as follows:  ...

Treatment of natural water and sewage is closely linked to preservation of the environment and is thus an actual present day problem. During the last decades there have been noticed substantial increase of the content of heavy metals, mineral oil, poorly-oxidable organic compounds, synthetic surfactants, pesticides and other pollutants from insufficiently treated effluents of industrial and municipal enterprises in open water reservoirs. In spite of the great number of elaborations reported in literature, the problem of natural  water and sewage treatment  has not yet been solved. Hence, the technology of water treatment needs further perfection which mainly includes the ways of intensive use of reagents, in particular flocculants. For these purposes water-soluble high-molecular compounds among which the most widespread and universal are polyacrylamide flocculants are used. As a result of their application the efficiency of removal of heavy metals is increased by 95%, compound...

Polyacrylamide (PAM), general known as flocculants, is the linear polymers with the molecular weight between 5-25 million. Its solid product appearance is white or slightly yellow powder, while its liquid is no colored viscous emulsion. This products is easily soluble in water and decomposed when the temperature is more than 120 ℃.  The positive group (-CONH2) in polyacrylamide molecule could easily adsorb and bridge with the dispersion of suspended particles in the solution which makes it a strong flocculation characters. That’s why polyacrylamide could be widely used in water treatment, paper, mineral processing and other fields. While what we discuss today is not about the application as above fields. Polyacrylamide could also be used be effective friction reducer in Oil & Gas field . Friction reducer, or called drag reducing agents are the agents that could reduce the resistance of a fluid to transport which are mostly water-soluble or oil-soluble polymer. Actually 20...

In the mining industry, effective separating the mineral solids from water or aqueous solutions is critical. If there is no effective flocculation in sedimentation or centrifugation process, the heavier inorganic solids may fall to the bottom of the settler and the smaller particles will be suspended in the supernatant, such as the standing solution. Then the efficiency of filtration and dehydration is also significantly decreased by the existed of small amounts of particles in the supernatant. While these small particles can be quickly settled down by adding Polyacrylamide (PAM) to this aqueous dispersion, in this process the individual particles in the suspension tend to aggregate to form heavy aggregates easily and settle very quickly and the upper dispersion becomes a clear liquid. Coal Washing The active groups on the polyacrylamide molecular chains of coal washing adsorb on the surface of the fine particles in the slime water, which connect the particles and make the fine pa...

As we all know, China is a country with scarce water resources. Environmental protection is the key to ensure the sustainable development of the material basis. The protection of water, treatment of water pollution is an important part of environmental protection, so the application of polyacrylamide PAM in water treatment is of particular significance. Polyacrylamide is the world's most widely used, the highest performance of organic polymer flocculants, which is also the most popular used flocculants in China currently. Polyacrylamide is mainly sold in two forms of goods, one is powder, and one is emulsion. The most commonly used is powder products as emulsion is not easy to transport and not convenient to use. There are cationic, anionic and non-ionic several types polyacrylamide, suitable for different purposes and different flocculation objects. Polyamide (PAM) amide (-CONH2) can be affinity with many substances, adsorption to form hydrogen bonds. The high molecular weight PAM...

In the metal metallurgy field, whether it is the initial mineral processing or late refining process, a solution as a reaction carrier will be used, and the enrichment of minerals will be deposited to obtain high concentrations of metal compounds through solid-liquid separation. In this series of complex mineral processing, enrichment and separation process, various additives are needed to strengthen and improve the settlement, solid-liquid separation efficiency. For a variety of mining and metallurgical industry, Sinofloc developed a series of polyacrylamide products, which has good application in gold and silver precious metals smelting, alumina industry, iron and steel smelting, zinc/ copper/ lead smelting and other areas of mineral separation problems. Through using different models of polyacrylamide, the solid-liquid separation and effect of enrichment could be greatly improved in the process of beneficiation, tailings flotation, concentration and sedimentation, washing sediment...

In last century, the cleaning water together with mudstone cuttings in the drilling process was used as natural drilling fluids. Later the drilling fluid chemical agent was developed as a more stable drilling fluid to ensure the safety of drilling. The Polyacrylamide (PAM) was begun to be used in drilling fluids in 1960’, while this approach has led to a significant change of the development of drilling fluids. Polyacrylamide not only increased drilling speed greatly, but also promoted the type of drilling fluid treatment agent from the past to the synthesis from natural polymers. The main functions of drilling fluid are: cleaning the bottom, carrying cuttings; cooling and lubrication drill and drill string; the formation of mud cake to protect the wall; control and balance formation pressure; cuttings and aggravating agents; in the ground to remove debris; to provide information about the drilling formation and so on. Nowadays, polyacrylamide (PAM) has played an important role in...

It is very difficult to dehydrate for biochemical sludge owing to its high organic content and strong hydrophilic colloid. So city and industrial wastewater commonly used activated sludge treatment. According to the nature of the sludge, the appropriate cationic could be applied, which can be effective in the sludge into the filter before the gravity sludge dewatering. The dehydration will result to floc large, non-stick filter cloth, in the filter does not disperse, with less, dehydration high efficiency, mud cake moisture content of 80% or less. Polyacrylamide treatment of sludge for the role of dehydration Principle: The flocculants prepared into the aqueous solution into the waste water, will produce a compressed double layer so that the suspension of suspended solids in the stability of the particles, the mutual aggregation of particles to increase particles to form flocs, alum. Flocculation grows to a certain volume after the action of gravity from the water phase precipitation, ...

Polyacrylamide (PAM) is not only a high-performance flocculants, but also a very good thickener because of the high viscosity. Due to its thickening, flocculation and regulation of rheological properties, PAM could be used as a variety of additives, such as drilling fluids, fracturing fluids, and additives in  Enhanced Oil Recovery  (EOR) . The key point to get the best performance of polyacrylamide in specific application is optimal design and selection of the products in the molecular weight, ion degree way and together with the oilfields conditions. Polyacrylamide (PAM) could be used as a  drilling fluid additive .  The role of polyacrylamide is to adjust the rheology of the drilling fluid, carry cuttings, lubricate the drill bit and facilitate drilling. This application could also reduce the drill accident and relieves the equipment from wear, and prevents the occurrence of well leakage and collapse. Polyacrylamide (PAM) could be used as a polymer flooding...

A considerable amount of information has been reported on how various polymeric additives affect drainage rate and fines retention. When used as a drainage aid, polyacrylamide can overcome slow drainage of fiber furnishes containing high-yield pulps such as stone groundwood, hardwood pulps and recycled fiber furnishes. In addition, these additives improve the drainage of high-base-weight paperboard furnishes and drainage of paper machines that are drainage limited. Mineral fillers have long been used in papermaking, especially in printing and writing papers, as they add positively to sheet formation, brightness, opacity and printability, besides lowering furnish cost. The common of flocculation of these fillers is crucial in order to maximize their retention in the fiber web, due both to economic and environmental concerns. However, since retention has to be balanced with an adequate drainage of the wet web and a good formation of the paper sheet, fiber flocculation should b...

Polyacrylamide is a versatile chemical treatment agent in oilfield. In oil extraction it could be used as a flooding agent, water shutoff regulator, drilling fluid regulator, fracturing fluid additives, especially in cementing, completion and workover. The oil industry is the largest area of polyacrylamide applications. Polyacrylamide (PAM) is not only a high-performance flocculants, but also because of the high viscosity of aqueous solution, but also a very good thickener. Due to its thickening, flocculation and regulation of rheological properties it can be used as a drilling fluid, fracturing fluid, and polymer flooding in the exploitation of oil extraction. The key to the application is the combination of conditions and requirements, Reasonable design and selection of its composition structure, such as molecular morphology, molecular weight, ion degree and so on. 1.Polyacrylamide for drilling mud additives. Drilling fluid in oil extraction works as drilling mud performance adjuster...

Polyacrylamide is widely used in recent years, not only in sewage treatment, petrochemical, paper, coal washing, construction industry and also many other aspects as mining reagent, such as phosphate, iron ore of the flotation and tailings water treatment, coal washing coal flocculation and water treatment. That's way it has a reputation said as over one hundred industry additives. Under normal circumstances, gold ore dressing can be divided into two kinds of gravity dressing and flotation. And usually with flotation most! If the gold ore embedded cloth relatively thick, the use of gravity dressing recovery indicators is good. Recycling of gold mining equipment is mainly shaker and centrifugal concentrator. While occurred in quartz or pyrite in the fine-grained gold, the use of flotation method, the recovery index is better. In this application the mineral need to be grinded to 80 -200 mesh, together with xanthate, black medicine for the commonly used collector, and pine oil for th...

Sinofloc Polyacrylamide is commonly used in concentrate dehydration, accelerated frame mud settlement, purification and improving the efficiency of the dense machine in the mining field. Selective flocculation of the pulp of fine-grained minerals is also a key application of our polymers, which could change the surface characteristics of the target mineral particles to increase the particle size, and thus flocculate and precipitate. In addition to the flotation, our polyacrylamide polymers could be used in the waste water treatment. The mine wastewater is generally the acidic state of iron, manganese, copper, gold, zinc ore. The treatment of such waste water is generally used neutralization method, which will adjust its PH value, the most commonly used limestone, and lime to do the regulator. For example, after the iron ore wastewater is neutralized, the main components of the waste water are iron hydroxide Fe (OH) 3 and colloid, Ca (OH) 2 calcium hydroxide and colloid, Fe (OH) 2 ferro...

Testing is always applied before formal using polyacrylamide in wastewater treatment. If the amount is too low, the product does not work, and if the amount is too high, there will be opposite reaction. The reason is when more than a certain concentration, polyacrylamide can not only have flocculation effect, but from the dispersion and stabilizing effect. In the choice of polyacrylamide models, following factors could be considered: 1, sludge is the inevitable product of sewage treatment. First of all we should understand the source of sludge, nature, composition and solid content. According to the sludge contains the main components of different sludge can be divided into organic sludge and inorganic sludge. In general, cationic polyacrylamide for the treatment of organic sludge, anionic polyacrylamide for the treatment of inorganic sludge, alkaline is very easy to use cationic polyacrylamide, and acidity should not use anionic polyacrylamide, when the solid content of mud is high...

Sinofloc series polyacrylamide is used in wastewater treatment with anion and cationic type, which can be used in flocculation precipitation and sewage treatment. Generally speaking, the higher the ion degree is, the more compact the sludge formation will be. Our anionic products can be used for flocculation and precipitate the suspended solids in sewage. Our cationic products are generally used in sludge treatment press, which will not clog the filter cloth, and the formation of sludge is more compact. Sludge is the main content of urban sewage and is a serious pollution source. Our technical staff will help customers test the nature, composition and solid content of the sludge and select the best products for this application. In general, cationic polyacrylamide  is used for the treatment of organic sludge, anionic polyacrylamide is for inorganic sludge. It is not suitable to use cationic polyacrylamide when it is very alkaline, but it is not suitable to use anion polyacr...

Anionic polyacrylamide applications involve mining, beneficiation and metallurgy. Using polyacrylamide can accelerate the settling of effective solids the concentration of small objects, and improve the solid-liquid separation effect, reduce tailings loss and environmental pollution, and also reduce production costs. Under normal circumstances, the process of mineral processing requires high molecular weight products to ensure rapid settling, good centrifugal processes, and easy access to good economic effects. Anionic polyacrylamide is the ideal chemical reagent for the mining and metallurgical industries. In the coal industry, the ore is classified according to different grain sizes after being mined. Because coal particles and impurities have different proportions in the water, separation of coal is usually taken in the water, coal floats on the surface while the impurities sink to the bottom. After classifing of the treated coal. we can get the product. During above process, pow...

Superabsorbent polymer (SAP) could be used as water retaining agent, which is a kind of functional high polymer materials with special ability to absorb water. In agriculture field, it is compared to “micro-reservoir” by people because it features non-toxic and harmless, repeated water release and water absorption. At the same time, it can also absorb fertilizer and pesticide, then release them slowly to increase the fertilizer and pesticide effects. Super absorbent resin is widely used in agriculture, forestry, horticulture and building materials. The whole world has been watching the event - drought. Since the 1950s, with the rapid industry development and the rapid population expansion, the problem of climate warming and drought is becoming more and more prominent. So, scientists from all over the world must begin to study effective ways to solve the problem - drought. In the 1980s, the absorbent composite was produced. Then it develops rapidly because it can improve the salinity...