KR100711548B1 - Amount Silicasand to use of drinking water Inhibitor a component and manufacture method. - Google Patents

Abstract

The present invention relates to a composition for the production of a silicate rust inhibitor (two kinds of environmentally-settled water treatment agents) using silica sand (purity 99.9%), the sum of primary and secondary loading compositions being 100 wt%, silica sand (SiO ₂ purity: 99.9% (Na ₂ CO ₃ ) were mixed at an appropriate ratio, and the resulting mixture was heated and melted for the first time to form sodium silicate (Na ₂ SiO ₃ ). Then, an appropriate amount of phosphoric anhydride (P ₂ O ₅ ), sodium hexametaphosphate (NaPO _{3) 6),} carbonate Carry (K ₂ CO _3), sodium phosphate (Na ₄ P ₂ O fatigue _7), by uniformly mixing the calcium carbonate (CaCO ₃₎ to the mixer continuously with a secondary input to the continuous production electric furnace This is a silicate antirust manufacturing method which is manufactured by casting in an automatic molding machine by condensation melting through an automatic temperature sensing sensor (SENSER) at a temperature of 1,450 DEG C in a continuous production electric melting furnace. The present invention is a product suitable for the drinking water standard of the two kinds of water treatment agents enacted by the Ministry of Environment, and is a harmless, nontoxic and environmentally friendly antirust agent to the human body as a uniform solubility that can be substituted for the phosphate which causes environmental pollution due to the conventional excessive dissolution.

Quartz sand, injection of the primary composition, injection of the secondary composition, melting, melting, silicate rust inhibitor, glass phase

Description

TECHNICAL FIELD [0001] The present invention relates to a composition for drinking water containing rust inhibitor using high purity silica sand and a method for manufacturing the same.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graphical illustration of an embodiment of a composition for the preparation of silicate rust inhibitors using the silica sand of the present invention

FIG. 2 is a comparative analysis chart of the content of heavy metals and the standard of the water treatment agent of the environment of the present invention analyzed by ICP analysis of the rust inhibitor prepared with the compound composition of the present invention

Fig. 3 is a graph comparing the performance of the produced anti-rust agent of the present invention with that of the imported anti-rust agent

4 is a comparative analysis chart of the composition of natural silica and domestic silica.

5 is a manufacturing process diagram of the present invention.

The present invention adopts the high temperature method of 1,700 캜 in the manufacturing method of the prior art (Patent Application Publication Nos. 92-4017 and 96-13482), which is superseded by the inventor of the present invention, supplemented by the application of 2000-0039194 However, the melting of the composition of the present invention can be sufficiently melted at a temperature of 1,450 ° C by proper mixing of silica (SiO ₂ ) and sodium carbonate (Na ₂ CO ₃ ). The preparation method of the prior art is a method in which all of the composition is mixed at one time and the melting time of the complete dissolution of the silica sand becomes long, so that waste of fuel and electric power is large, or dissolution of silica sand due to the polymerization process of acid and alkali It can be connected to the defect of quality which affects the solubility of the rust preventive agent. However, the present invention was able to complete the dissolution of the silica sand by mixing the first and second additives.

The present invention is primary, secondary as is 100wt% the sum of the primary mixed-composition of silica sand (SiO ₂₎ with sodium carbonate (Na ₂ CO ₃₎ the first combined input was Chemistry molten sodium complete dissolution silicate of silica sand, the anhydrous phosphoric acid (P ₂ O _5), hexametaphosphate soda ((NaPO _{3) 6),} carbonate Carry _{(K 2 CO 3), Na} 4 P ( sodium pyrophosphate ₂ O _7), added calcium carbonate (CaCO ₃₎ 2 tea blended by complete And thus a colorless transparent silicate rust preventive agent was obtained.

Silica sand refers to artificial silica sand (99.6 ~ 99.9%) that has natural silica sand (purity 99.9%) mined in its natural state and pulverized by pulverizing silica rock, Although high purity is more than 99.8% purity, its purity is 90% or so, and it is pushed by the principle of nature preservation, and further mining is getting harder. High purity derivative is expensive ), Which leads to cost increase. It is proven by the present invention that natural silica sand produced from Australia, which boasts a large amount of natural silica sand reserves, has a purity of 99.9% and is also suitable as a main raw material for a high purity silicate rust inhibitor.

The composition of the present invention is a composition comprising 55 to 60 wt% of silica (SiO ₂ : purity: 99.9%) and 30 to 34 wt% of sodium carbonate (Na ₂ CO ₃ ) (Na ₂ SiO ₃ ) and condensed in the melting furnace.

Na ₂ CO ₃ + nSiO ₂ → Na ₂ O · nSiO ₂ + CO ₂ ↑

3 wt% of anhydrous phosphoric acid (P ₂ O ₅ ), 3 wt% of sodium hexametaphosphate ((NaPO ₃ ) ₆ ), 0.5 to ₁ wt% of potassium carbonate (K ₂ CO ₃ ), sodium pyrophosphate (Na ₄ P ₂ O ₇ ) and 0.5 to ₁ wt% of calcium carbonate (CaCO ₃ ) are thoroughly mixed in a blender and then subjected to secondary condensation melting at a high temperature. In the conventional manufacturing method, the natural high-purity natural silicate (composition of 70% or more) was melted at 1,600 ° C. to 1,700 ° C., but the silica sand as the manufacturing method of the present invention was firstly melted with sodium carbonate (Na ₂ CO ₃ ) It is possible to melt at 1,450 ℃ and it is advantageous to obtain more energy saving, cost reduction and marketability with continuous production of infinite.

The melting and condensation time was also extended after 5 hours or more of melting with the conventional composition by opening the tapping trough. However, continuous production can be continuously performed for 4 hours by preheating at 1,450 ° C in the manufacturing composition of the present invention.

The silicate of the present invention is formed into a three-dimensional network structure formed by a siloxane bond (-Si-O-Si-) represented by nSiO ₂ .Na ₂ O. In the water, a silicate salt of a polymeric silicate (anion) Colloidal particles (negative charges) are adsorbed on the metal surface to form a non-glare protective coating, thereby preventing the elution of metal from the anode part and suppressing scale formation.

The rust inhibitor using the composition of the rust preventive agent which is condensed with silica sand and the auxiliary raw material according to the present invention is characterized in that the total amount of the primary and secondary application compositions is 100% by weight and the silicate The purpose is to mass-produce anti-corrosion agents.

To achieve the above object, the composition is thoroughly mixed with 55 to 60 wt% of silica (SiO ₂ purity: 99.9%) and 30 to 34 wt% of anhydrous sodium carbonate (Na ₂ CO ₃ ), and the mixture is completely melted at a melting temperature of 1,450 ° C., a screen after sodium, phosphoric acid anhydride _{(P 2 O 5) 3wt%} , sodium hexametaphosphate _{((NaPO 3) 6) 3wt} %, acid Carry _{(K 2 CO 3) 0.5~1wt%} , sodium pyrophosphate (Na ₄ P ₂ O ₇ ) and 0.5 to ₁ wt% of calcium carbonate (CaCO ₃ ) are thoroughly mixed in a mixer and the second injection is made into the melting furnace, the secondary addition composition is rapidly added to the sodium silicate (Na ₂ SiO ₃ ) The purpose is achieved by producing an antirust agent which is absorbed and dissolved to have a uniform solubility. The silicate rust preventive prepared by the above composition is stable in water temperature (15 to 18 ° C) at all times, harmless to the human body, nontoxic, and has excellent antirust effect and transparency.

Hereinafter, the test of the action and effect of the rust inhibitor prepared with the composition of the present invention will be described with reference to the attached charts.

Fig. 1 is a graph showing an example of the composition used in the preparation of rust inhibitor using the composition of the present invention. Fig. 2 is a graph comparing the content of heavy metals with the rust- , And FIG. 3 is a performance comparison chart of the performance of the produced rust inhibitor of the present invention and imported rust inhibitor imported into the country.

Fig. 4 is a table showing the compositional analysis of natural silica and domestic silica. As shown in the chart, the content of SiO ₂ in domestic gypsum ore is 99.48%, but it is 99.78% in terms of synthetic silica sand, while the natural silica has a high purity of 99.90%. Proven.

5 is a manufacturing process chart and the composition is automatic injector (FEED MACHINE) a through the first input is melt condensation and Chemistry of sodium silicate (Na ₂ SiO _{3), 2} tea In the melt condensation of a continuous automated in which the process is repeated that the tapping-in of the present invention Process.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an embodiment showing the blending ratio of the rustproofing agent composition using the natural silica sand of the present invention. Fig. The composition ratios of Examples 1, 2 and 3 were different from each other, but it proved to be suitable for the rust inhibitive effect and the silicate quality standard of the environment.

(P ₂ O ₅ ) in an amount of 3 wt% of anhydrous phosphoric acid (P ₂ O ₅ ) after melting at a temperature of 1,450 ° C. in a first batch of 55 to 60 wt% of silica (SiO ₂ purity: 99.9%) and 30 to 34 wt% of anhydrous sodium carbonate (Na ₂ CO ₃ ) ₃ wt% of sodium hexametaphosphate (NaPO ₃ ) ₆ , 0.5 to ₁ wt% of potassium carbonate (K ₂ CO ₃ ), 3 wt% of sodium pyrophosphate (Na ₄ P ₂ O ₇ ) and 0.5 to ₁ wt% of calcium carbonate (CaCO ₃ ) % Are mixed in a blender and mixed in a screw type blender (FEED MACHINE) and melted in a melting furnace at a temperature of 1,450 ° C. and molded by an automatic molding machine to obtain spherical crystals.

Silica (SiO ₂ purity: 99.9%) is converted to sodium silicate (Na ₂ SiO ₃ ) because it is condensed and melted with an appropriate anhydrous sodium carbonate (Na ₂ CO ₃ ). The higher the Na content, the lower the melting temperature of silica. It dissolves in water to form a siliceous coating of 1μ (micron) in the piping, helps to soften the water and adjusts the alkalinity.

Phosphoric anhydride (P ₂ O ₅ ) helps dehydration for solidification in the production of rust preventive agent. It dissolves in water and acts as a dispersant of iron as well as rust removal of iron with pure phosphoric acid and softening of hard water.

Sodium hexametaphosphate (NaPO ₃ ) ₆ has excellent metal ion sequestration ability, dispersing action and cleaning action and assists in the dispersing agent of molten product. Carbonic acid (K ₂ CO ₃ ) is strong alkaline and anhydrous ( Na ₂ CO ₃ ) as well as the role of alkalinity and deactivation as a neutralizing agent, as well as the role of bubbling of the rust inhibitor. Sodium pyrophosphate (Na ₄ P ₂ O ₇ ) has a strong binding force with metal ions such as Cu ⁺⁺⁺ , Cu ⁺⁺ , Fe ⁺⁺⁺ and Mn ⁺⁺⁺ , Big. The pyrophosphate has the lowest degree of condensation to thermal hydrolysis and therefore stabilizes the solubility of the composition melt at a melting point (983 ° C) that is stronger against thermal hydrolysis and lower than the melting temperature of the water. Calcium carbonate (CaCO ₃ ) acts as a strengthening agent for the strength control of the molten product and the uniform siliceous coating. When the above ingredients are mixed at an appropriate ratio and the melting is completed, the glassy spherical crystals are formed.

For better understanding of the composition of the present invention described above, embodiments of the compounding and manufacturing method of the present invention will be described in detail.

≪ Example 1 >

Natural silica sand (SiO ₂ purity, 99.9%) 60wt%, anhydrous sodium carbonate (Na ₂ CO ₃₎ when blended to 30wt% In the electric furnace and passed for 2 hours 30 - minute synthesis reaction at a temperature of 1,450 ℃ sodium silicate (Na ₂ SiO ₃ ) and dissolved transparently. 3 wt% of phosphoric anhydride (P ₂ O ₅ ), 3 wt% of sodium hexametaphosphate ((NaPO ₃ ) ₆ ), 0.5 wt% of potassium carbonate (K ₂ CO ₃ ), sodium pyrophosphate (Na ₄ P ₂ O ₇ ) 3 wt% and calcium carbonate (CaCO ₃ ) 0.5 wt% were melted and crystallized at 1,450 ° C for 1 hour and 30 minutes, and the above-mentioned optimum combination was carried out at a melting temperature of 1,450 ° C for 4 hours The melting time could be controlled. The reaction-terminated melt was naturally cooled to obtain a glassy colorless transparent crushed crystal (SiO ₂ content 67.3%).

≪ Example 2 >

55% by weight of natural silica (SiO ₂ purity: 99.%) and 34% by weight of anhydrous sodium carbonate (Na ₂ CO ₃ ) were added to the electric melting furnace. After 2 hours and 10 minutes of synthetic reaction at 1,450 ° C, sodium silicate ₂ SiO ₃ ) and dissolved in a transparent state. 3 wt% of phosphoric anhydride (P ₂ O ₅ ), 3 wt% of sodium hexapisaphosphate ((NaPO ₃ ) ₆ ), 1 wt% of potassium carbonate (K ₂ CO ₃ ) 3 wt% of sodium (Na ₄ P ₂ O ₇ ) and 1 wt% of calcium carbonate (CaCO ₃ ) were melt-crystallized at 1,450 ° C. for 1 hour and 20 minutes in the same manner as in Example 1, And the melting time of 4 hours. To obtain a crystal (SiO ₂ content of 65.8%) of the glass phase in the synthetic reaction.

≪ Example 3 >

58% by weight of natural silica (SiO ₂ purity: 99.9%) and 32% by weight of anhydrous sodium carbonate (Na ₂ CO ₃ ) were dissolved in sodium silicate (Na ₂ SiO ₃ ) at a first melting temperature of 1,450 ° C. for 2 hours and 20 minutes 3 wt% of phosphoric anhydride (P ₂ O ₅ ), 3 wt% of sodium hexametaphosphate (NaPO ₃ ) ₆ , 0.5 wt% of potassium carbonate (K ₂ CO ₃ ) and sodium pyrophosphate (Na ₄ P ₂ O ₇₎ 3wt%, calcium carbonate (CaCO ₃₎ 0.5wt% quantitative mixed manner as in example 1 temperature 2 hours and 20 minutes to melt the crystal (SiO ₂ content of 66.5% of the glass phase in the synthetic reaction of 1,450 ℃ of a) .

In the above example, the synthesis reaction melting time of sodium silicate (Na ₂ SiO ₃ ) is different depending on the composition ratio of silica sand (SiO ₂ ) and anhydrous sodium carbonate (Na ₂ CO ₃ ), and the composition is melted at a melting temperature of 1,450 ° C. It is the most suitable melting temperature for dissolving the composition of the present invention.

Fig. 2 is a graph comparing the rustproofing agent prepared in Fig. 1 with ICP to the standard of the water treatment agent in the environment. However, the rustproofing agent prepared with high purity silica 99.9% Proved to be an anti-rust agent.

Figs. 3-1 and 3-2 show the results of the rust-inhibitive comparison test between the rust-preventive agent of the present invention and the rust-preventive agent imported into the country. Each rustproofing agent was liquefied and added to 500 ml and 1000 ml of tap water (charging time) in 5 ml increments and tested under the same test conditions (18 ° C, 30 days test period) as the same specimen (KS D 3506 steel plate) The corrosion inhibitor of the present invention showed no corrosion and the corrosion inhibitor of the present invention was superior in corrosion inhibition ability.

Fig. 4 is a comparison chart of the components of natural silica and domestic silica. There are natural silica sand and artificial silica sand in the sand. Artificial silica sand is silica sand produced by crushing silica sand. Natural sand silica sand is collected from the coast or rivers by using round particles. The silica sand is removed by washing, and the uneven particles are removed by screening . The entire North Stradbroke Island of East Australia is covered with high quality natural silica sand, the reserves amount to 45 million tons and have 50 years of mining capacity, and the supply source is also supplied by the leading domestic company, so that the stability and quality of the supply are superior to those of domestic artificial silica sand. It can be confirmed by composition analysis chart.

FIG. 5 shows a process for obtaining a silicate rust preventive agent of good quality by injecting a composition through a second order. As a green manufacturing agent, sodium silicate and anhydrous sodium carbonate were mixed at a proper ratio in a proper ratio, ₂ SiO ₃ ), and an appropriate amount of anhydrous phosphoric acid, sodium hexametaphosphate, carbonic acid carbonate, sodium pyrophosphate and calcium carbonate are mixed in a mixer and then added to the electric melting furnace in a second step to obtain an automatic temperature sensing sense of 1,450 ° C., And then cooled slowly to prevent the risk of fracture due to the heat resistance temperature, and after a thorough inspection of the product, the product is packed through the process of solubility, content, pH and heavy metal test, This is a process for manufacturing rust inhibitor.

In the composition of the present invention, the content of the melts is heated to a temperature of 1,600 ° C. or higher by adopting the weight ratio of the conventional silicate powder (SiO ₂ ) of 72 to 80% However, due to the composition of the present invention, mass production of continuous production and melting process of 1,450 ° C have been accompanied by energy saving effect, and as a result of preparation for domestic resource depletion, By securing low-cost, low-consumption raw materials, the cost-cutting effect was also paralleled.

In addition, it was also a result of the present invention that dust pollution was caused when the compounding amount of powdered silica powder of # 320 or more was added, but the working environment was also cleaned by the input of coarse particles of silica.

Raw materials used are not harmful to humans, plants and animals when they are consumed in drinking water as well as corrosion prevention effect in piping by using food additives as raw materials except for silica sand. It does not cause any toxicity, it is tasteless, odorless, and environmentally friendly.

In addition, by using high purity silica sand, it is possible to reduce dust pollution caused by the input of the conventional silica slag melting furnace, thereby reducing the work environment and the environment, and by using the electric power source, And conservation of domestic resources without overfishing can be regarded as significant in terms of environmental preservation.

Claims (2)

In the molten composition composed of the first charging composition and the second charging composition, the sum of the composition ratios of the primary and secondary charging compositions was set at 100 wt%, the silica sand (SiO ₂ purity: 99.9% 60wt%, anhydrous sodium carbonate (Na ₂ CO ₃₎ 30~34wt% and 2 anhydrous phosphoric acid (P ₂ O ₅₎ is added to the tea composition 3wt%, sodium hexametaphosphate _{((NaPO 3) 6) 3wt} %, acid Carry ( (SiO ₂ purity: 99.9%) which is composed of 0.5 to ₁ wt% of calcium carbonate (K ₂ CO ₃ ), 3 wt% of sodium pyrophosphate (Na ₄ P ₂ O ₇ ) and 0.5 to ₁ wt% of calcium carbonate (CaCO ₃ ) Melt composition of rust inhibitor. A process for producing a melted composition, comprising the steps of: mixing a first charging composition in the molten composition of claim 1 thoroughly and introducing the mixture into a melting furnace at a melting temperature of 1,450 ° C. to form sodium silicate (Na ₂ SiO ₃ ) (SiO ₂ purity: 99.9%) manufactured by a second injection method, wherein glassy crystals are obtained by boiling and slowly cooling at a melting temperature of 1,450 ° C. for 4 hours.

Images