CN1242406A

CN1242406A - Agent for quick melting snow or ice, and method for preparing same

Info

Publication number: CN1242406A
Application number: CN 99109322
Authority: CN
Inventors: 王新民
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-24
Filing date: 1999-06-24
Publication date: 2000-01-26
Anticipated expiration: 2019-06-24
Also published as: CN1088737C

Abstract

The ice and snow quick melting agent is a composite formed from several ingredients including ammonium hydrogen carbonate, red phosphorus, potassium chloride, calcium nitrate, magnesium nitrate and ethanediol, etc., and is a liquid or microcrystalline material formed by means of a series of chemical reactions. Said invention is a salt-free ice and snow quick melting agent which can be used for melting the ice and snow on the airport pavement and high speed highway, also can be used as antifreezing additive for winter construction of engineering concrete.

Description

Agent for quick melting snow or ice and preparation method thereof

The present invention relates to agent for quick melting snow or ice, more specifically saying so solves airport runway surface, Urban traffic road surface, motorway face ice snow fast thawing and the antifreeze quick melting agent of construction work concrete construction in winter.

At present adopt sodium-chlor as melting agent mostly in the ice dissolution on above-mentioned road surface both at home and abroad, the major defect of its existence is: the one, and thawing speed and thawing degree are lower, and can not solve the ice dissolution problem fully; The 2nd, to metallic corrosion such as the reinforcing bar of concrete road surface, drill rod dimensions; The 3rd, to afforestation vegetation environmental pollution around road face, the road surface; The 4th, villaumite has bigger corrosive nature to aircraft rack, causes the generation of the security incident of taking off and landing easily.

The inventor in detail deeply analyzes and repetition test research through for many years the accident of existing problem of sodium-chlor ice and snow thawing agent and generation being made comparisons, trial-produceed ice snow fast thawing and frostproofer successfully, solved that road face ice and snow on road surfaces speed is melted and the antifreeze difficult problem of engineering construction in winter.And having overcome the villaumite melting agent, to melt degree not high, and contaminate environment causes the accident and builds the antifreeze problem of winter construction the building structure corrosion.

The ice snow fast thawing antifreezing agent is the mixture of a kind of organism and inorganics, and its used raw material is to be made by following component weight proportion:

Bicarbonate of ammonia 120-180 part, red phosphorus 80-100 part, Repone K 30-70 part, nitrocalcite 220-270 part, magnesium nitrate 220-270 part, ethylene glycol 120-180 part.The explained hereafter method of agent for quick melting snow or ice is: with bicarbonate of ammonia 120-180 part of above feed composition weight proportion, red phosphorus 80-120 part, Repone K 30-70 part is dropped in the reactor, add 250 parts of water again, heat temperature raising to 100 ℃, be incubated 2 hours, through observing its dissolution degree, its denseness of feel, sampling detects its density, when its density during at 46-48%, and disgorging, change synthetic stirring tank over to, add 220-270 part nitrocalcite more successively, 220-270 part magnesium nitrate, 120-180 part ethylene glycol, stirred 1.5 hours, through dissolving, reaction, precipitation, sediment exclusion is again with solution process drying machine drying, treat that the crystal water ratio at 5% o'clock, promptly gets desired product.

Embodiment

The most preferred embodiment weight proportion of ice snow fast thawing antifreezing agent is: bicarbonate of ammonia 150kg, red phosphorus 100kg, Repone K 50kg, nitrocalcite 250kg, magnesium nitrate 250kg, di-alcohol 150kg.Its making processes is earlier 150kg bicarbonate of ammonia to be put into the bottom of reactor, 100kg red phosphorus is put into the middle level, 50kg Repone K is put into the upper strata, add entry 250kg again in reactor, stop heating during heat temperature raising to 100 ℃, kept constant temperature 2 hours, restir 30 minutes, quiet stopping precipitated in 2 hours, observe dissolution degree, the feel denseness, sampling detects density, density is controlled within the 46-48%, and disgorging changes synthetic stirring tank over to, add 250kg nitrocalcite more successively, the 250kg magnesium nitrate, 150kg ethylene glycol stirred 1.5 hours, through dissolving, reaction, precipitation is got rid of normal throw out, again solution drying machine is dried, when treating that the crystal water ratio is within 5%, promptly obtain desired product, carry out metering packing.

Agent for quick melting snow or ice using method and advantage thereof

(1) this ice snow fast thawing frostproofer is applied to above-mentioned traffic facilities and concreting in cold-weather engineering, and not only performance is good, and is easy to use, and cost is equivalent to about 60% of present chloride salt melting agent cost;

When (2) this thawing frostproofer uses according to the different thickness of snowfall, can be on every square metre of runway directly uniform spill 30-50 gram agent for quick melting snow or ice crystal or with crystal with water-soluble for and liquid adopt the water barrow sprinkling, ice and snow on the runway face melts at once, and, play anti-skidding security personnel's effect continuing to keep icing below 0 ℃;

(3) this thawing frostproofer is as the frostproofer of construction work concreting in cold weather, the 3-5% of every cubic meter of concrete water consumption can be melted the concrete that frostproofer mix and went in the concrete to stir (according to temperature situation-5 ℃--15 ℃ time can regulate volume in this scope) formation through stirring after and have freezing tolerance;

(4) to detect index as follows for the concrete performance that is mixed with agent for quick melting snow or ice: water-reducing rate 4-8%, bleeding rate be than≤100%, air content 〉=2%, and in the time of-15 ℃ ,-7d+28d compressive strength rate 〉=80%, later strength is unaffected.

Claims

1, a kind of agent for quick melting snow or ice is the mixture of a kind of organism and inorganics, it is characterized in that it contains following materials of weight proportions:

Bicarbonate of ammonia 120-180 part, red phosphorus 80-100 part, Repone K 30-70 part, nitrocalcite 220-270 part, magnesium nitrate 220-270 part, ethylene glycol 120-180 part

2. the preparation method of an agent for quick melting snow or ice, it is characterized in that being elder generation's bicarbonate of ammonia 120-180 part with following raw material weight proportioning, red phosphorus 80-100 part, Repone K 30-70 part is dropped in the reactor, add 220-280kg water, heat temperature raising to 100 ℃, be incubated 2 hours, when its density reaches 46-48%, behind the sediment exclusion, change synthetic stirring tank over to, add nitrocalcite 220-270 part more successively, magnesium nitrate 220-270 part, ethylene glycol 120-180 part, stirred 1.5 hours, through dissolving, precipitation, sediment exclusion is dried solution, when treating that the crystal water ratio is within 5%, promptly get desired product.