coke potassium phosphate and electroplating with focal potassium phosphate 3 categories

In purchase to produce electrical plating smooth, commercial manufacturing plating option formulas are extremely complex. Previously utilized cyanide as completion agent to compound plating solution. But credited to possess poisonous, CN - plating wellbeing workers, and at a similar time, the good harm of sewage discharge that contains CN - serious environmental pollution, waste materials too. Therefore, the principal utilization of cyanogens now electroplating plating. however the choice cyanide completion agent is coke potassium phosphate.

Coke in tetra potassium phosphate is generally utilized for surface area remedy of plating and cyanogens and high-grade detergent, paints and coatings, detergent, dispersion, slow granule, etc. Food-grade utilized in meals digesting of emulsifier, organization, excellent improver chelating agent, improver etc.

From specialized requirements, focal potassium phosphate into industry, meals additives, coke potassium phosphate and electroplating with focal potassium phosphate 3 categories, as properly as the associated usual parameters as follows:

Table 1: commercial focal potassium phosphate [/ TG12006-88] ZB

project

index

Classy article

product

product

Coke potassium phosphate (K4P2O7) content, %

96.0 acuity

95.0 acuity

94.0 acuity

Determine if lexicon-extension (Be) radiography metal content, %

Acuities 0.03

Than 0.05

Acuities 0.10

Water content, %

Acuities 0.10

Acuities collateral

More than 0.25

PH worth (1% solution),

10.0-10.7

Orthophosphate

With experiments

Table 2: meals additive focal potassium phosphate [the FAO/WHO 1980],

project

index

Coke potassium phosphate (K4P2O7) content, %

95.0 acuity

Burning weightlessness written content %

More than half

Water content, %

Than 0.2

Arsenic (As) content, %

0.0003 acuities

Heavy metals (Pm) content, %

Acuities 0.002

The fluoride (in) content, f. %

Than 0.001

Lead (Pb) content, %

Than 0.001

Table 3: plating with focal potassium phosphate [1999] T3591 / HG commerce -

project

index

Coke potassium phosphate (K4P2O7) content, %

98.0 acuity

Determine if lexicon-extension (Fe) radiography metal written content %

Than 0.01

Water content, %

Acuities 0.10

PH worth (10g/L solution),

10.5 ± 0.5

Lead (Pb) content, %

Acuities 0.003

Hat analyze (DK dm2/10A experiment.it below electroplating)

qualified

Coke potassium phosphate by neutralizing potassium hydroxide phosphoric acid and create hydrogen potassium phosphate, two heating system, the polymerization response dehydration equation is as follows:

H3PO4 + 2KOH - K2HPO4 + 2H2O

2K2HPO4 - K2P2O7 + H2O

We know, potassium phosphate manufacturing procedure is "converter one-step" and "two-step" two craft. So "one-step" and "two-step" what qualities and differences? With this problem, we interviewed chengdu substance Co., LTD, senior engineer, Mr. Li.

Chengdu substance Co., LTD is normally a organization has 51 many years lengthy history, the manufacturing and operation of enterprises, potassium hydroxide, potash potassium dihydrogen phosphate, potassium phosphate trichloramine, hydrogen silicone, hydrochloric acid, sodium hydrochloride of fluid chlorine, major technology, top quality products, was awarded the nationwide new item prize, the nationwide JinZhiJiang and sichuan province famous-brand products, that include various awards, marketed at household and abroad. organizations also successively obtained "China best 500 businesses substance commercial enterprises", "top fifty of chengdu in sichuan province", "industrial business earnings and 200" title, and vice President of China association of China, inorganic chlor-alkali association director unit, the substance business in China in potassium substantial reputation.

Li engineer to inform a reporter, "converter one-step" refers towards the procedure of potassium hydrogen two phosphate and dried out in converter, as well as completed inside two hydrogen potassium phosphate great option via the high-pressure pump spray nozzle, inside the converter with burners combustion heat the mixture to swiftly evaporate moisture, induced by hydrogen get away, two potassium phosphate in specific time and temperatures polymerization obtained coke potassium phosphate. with the two hydrogen potassium phosphate secretly by washing powder and recycling, return oxygen tower kettle.

"Two-step" engineering refers towards the 1st two hydrogen potassium phosphate option with blade dryer dried out flaky or granular materials, the polymerization, in the stove with converter hot, the polymerization by confocal potassium phosphate, cooling grinding of packaging products.

"One-step" engineering could be the principal benefits of compact equipment, procedure maturity, and mature sodium triptych-asphalt manufacturing process. Its weakness lies in its procedure design, for the reason that of lacking pertinence acid potassium hydrogen two soon after spray granules are extremely slim and light, not completely ensure polymerization time materials, procedure parameters, big variation degree, item excellent is not stable, written content is low. And exhaust fuel recovery program burden is heavier, chimney smoke, it is tough to accomplish environmental emissions.

"Two-step" procedure in phosphoric acid option of potassium hydrogen manufacturing (2) grain drying process, and do not create any dirt in converter time and temperatures within the polymerization of item could be precise control, principal written content may possibly accomplish above 98%. The entire program is only emissions of carbon dioxide fuel and steam. nearly no entrainment dirt emission, appreciably cutting down the stress of atmosphere protection.

Chengdu substance Co., LTD adopts "two-step" manufacturing of potassium phosphate, the yearly output is 5000 tons, the specialized indexes, exceeded the usual gb and business through the client request, the unanimous acclaim. And chengdu substance Co., LTD. Of potassium phosphate manufacturing procedure of steam and carbon dioxide developed by recycling, for the a single hand, decrease the manufacturing cost, for the other hand would be to safeguard the environment. In its financial advantages and environmental benefits, is worth the win-win scenario of substance enterprise.