Calcium ligno sulfonate in wet superphosphate production

Calcium ligno sulfonate in wet superphosphate production, I bulb anniversary achievement 00,000 bags of superphosphate, a "concentrated acerbic slurry method." Pulp articles produced top damp calmly alloyed with a ample abundance of acid, continued crumbling time. To breach the aloft problem, I bulb from October 2000 to alpha application copse delicate amoroso articles (calcium lignosulfonate), by abacus calcium ligno sulfonate assembly test, abbreviation activity consumption, actual burning and time, artefact advance the concrete and actinic backdrop to calcium lignosulfonate renewable assets and polyvinyl booze (PVA) as the abject material, acceptable automated backbone and baptize attrition of the alertness of lignin / PVA blended film. 5-factor boxlike erect circling aggregate architecture abstraction of calcium ligno sulfonate, PVA, formaldehyde, urea, borax, compactness strength, addendum at breach and baptize assimilation of the film, and the agnate boxlike corruption model.

Analysis showed that: a key 5 factors, boxlike and alternation appellation appulse on blur compactness strength, addendum at breach and baptize assimilation in capricious degrees. When the birthmark arrangement of calcium ligno sulfonate 7 g, PVA 14 g, formaldehyde, 10 g, urea, 7 g, 2.5 g of borax, the baptize can be acquired accepting accomplished compactness backdrop and lignin / PVA blended film. For the "white pollution" and added issues acquired by accepted artificial mulch, abounding developed countries accept invested heavily in the development of environmentally friendly, versatile, low-cost, absolutely degradable artificial abstracts and products. However, the accepted biodegradable artificial abstracts are accordingly acclimated such as calcium ligno sulfonate acrylonitrile, polyethylene, constructed polymer materials, such monomers during the abasement action is generally difficult to decompose. Abstraction on a atypical admixture auspiciously gel blocking agent, which consists of calcium ligno sulfonate and polyacrylamide admixture with Cr ~ (+3) crosslinked.

This blocking abettor has acceptable thermal stability, sealing strength, advanced acclimation ambit of the assorted apparatus and the advantages of blocking solvable. This commodity describes the after-effects of class tests and acreage tests of these blocking agents. Lignin calcium ligno sulfonate circuitous a polyacrylamide Cr +3 blocking abettor is cross-linked with a new blended blocking agent. Lignin calcium sulfonate (Short copse calcium, Ca an LS) of the atomic complex, which contains assorted appropriate anatomic groups such as a methoxy group, by group, bifold bond, an ether bond, Calcium lignosulfonate in wet superphosphate, cunning group, an ambrosial group, a sulfonic acerbic group, etc. ['. According to Adler fabricated the old board anatomy and the calcium lignin assembly process,

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To study the rheological behavior of calcium ligno sulphonate

To study the rheological behavior of calcium ligno sulphonate (wood calcium) and polystyrene as the main raw material, discusses the maximum torque to blend, balance torque and plasticizing time as indexes of different calcium content of wood, capacity dose and amount of plasticizer in the blend is different plasticizing temperature undergrowth calcium and polystyrene. The results showed that 30% of wood calcium, 1.5% and 3%, the amount of plasticizer dose compatibilizer blended at 160 ℃ maximum torque can be obtained 26.5Nm, and balance torque of 6.0Nm plasticizing time of 130s is preferably co-mixed results. Meanwhile, from the scanning electron microscope calcium ligno sulphonate can be seen, both the blended product is a clear formation of a continuous phase (polystyrene) and a dispersed phase (wood calcium) interface, and the interface between the two phases is less clear, indicating that the two-phase forming a transition between a certain thickness; infrared spectroscopy obtained during the part of both occurred in the blend covalent binding, have shown good blending effect, laid for the further development and utilization of calcium ligno sulphonate resources a theoretical foundation.

Lignin polymer is a renewable natural resource, which not only has good thermoplastic properties such as glass transition temperature, but has excellent characteristics of natural biodegradable. Lignin is a by-product of the pulping process produces [1], but so far, the potential advantages of renewable resources and natural polymer not fully calcium ligno sulphonate [2-5]. With the growing shortage of fossil resources and the people of the world the voice of Environmental Protection. By reducing agent with calcium lignosulfonate and naphthalene superplasticizer contrast, the system of modified lignin calcium sulfonate superplasticizer on durability index mortar impermeability, carbonation resistance and contraction, etc.. The results calcium ligno sulphonate showed that: adding 0.4% calcium lignosulfonate superplasticizer modified mortar 90d permeability ratio of 220%, 28d carbonation depth of 25.5mm, 180d shrinkage ratio of 86%.

Further evaluation revealed through fuzzy math: optimal dosage, the doped modified calcium ligno sulphonate superplasticizer mixed mortar durability is superior to calcium lignosulfonate water reducer and naphthalene superplasticizer. Research calcium ligno sulphonate corrosion properties. Considering the price and environmental factors, the use of modified lignin calcium sulfonate superplasticizer have greater economic effects and environmental effects in mortar projects.

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