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Properties of sodium silicate bonded sand hardened by

absorbability of sodium silicate bonded sand hardened by microwave heating has significant theoretical and practical meaning for the production application of the microwave heating hardening sodium silicate bonded sand process. 1 Experimental materials and methods The raw sand was coated with sodium silicate binder to form the specimens.

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The study of thermal interaction and microstructure of

Dec 01, 2016The composite between sodium silicate and bentonite with different compositions had been observed within the microwave radiation. The response of pure sodium silicate and pure bentonite cannot provide the temperature above 300 °C, but the composite of 10–50% bentonite gave an excellent response to the microwave.

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Microwave-Hardened Moulding Sands with Hydrated Sodium

hydrated sodium silicate hardened by microwave technology. The aim of the research was to develop an optimal sand composition that would provide the strength necessary to make a mould capable of withstanding the modified ablation casting process. At the same time,

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CO 2 Microwave Hardened Sodium Silicate Sand Study and

Jul 01, 2018Strong hygroscopic of sodium silicate sand is a key problem in the practical application. Hygroscopic mechanism research of sodium silicate sand is not enough. CO 2 hardened and microwave heating hardened to composite hardened process of sodium silicate sand has been proposed in this . Through optimization of air temperature, blowing time, microwave

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Cited by: 1

(PDF) Preparation of Silica Gel from Rice Husk Ash Using

The obtained sodium silicate was neutralized to give silica gel. The best condition for silica gel production was the reaction with 2.0 M sodium hydroxide at microwave power of 800 W for 10

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Performances of sodium silicate sand hardened by microwave

The sodium silicate sand hardened by microwave heating has many advantages including high compression strength, high hardening speed, less addition of sodium silicate

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Microwaving sodium silicate :eek: The Home Foundry

May 27, 2018Pure sodium silicate is a white powder, if it's made using the aqueous method then you're reacting caustic soda, sand and water to get the liquid form. Edit:Looks like I was guessing correctly: according to Wikipedia, heating liquid sodium silicate above 105 degrees C or 221 deg F will drive off water and make it go into "Glass phase" and solidify.

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Research on Humidity Resistance of Sodium Silicate Sand

To study the high moisture absorbability of the sodium silicate boned sand hardened by microwave heating, a new special water-based coat sprayed on the surface of the sand samples hardened by the first microwave heating and then sintered by the second microwave heating to form a compact coating layer was studied. The results showed that humidity resistance of the

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Microwave-Hardened Moulding Sands with Hydrated

hydrated sodium silicate hardened by microwave technology. The aim of the research was to develop an optimal sand composition that would provide the strength necessary to make a mould capable of withstanding the modified ablation casting process. At the same time,

get price

IMPROVE THE HUMIDITY RESISTANCE OF SODIUM SILICATE

cluding sodium silicate molding sands. The microwave hardening of sodium silicate sands is low cost and en-ergy saving because the energy is delivered directly to the objects to be heated [2]. However, the microwave heating of sodium silicate sands requires high-quality mould materials and strong moisture absorbability of the sodium silicate sands.

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Effect of Surface Coating Strengthening on Humidity

The microwave heating sodium silicate bonded sand (SSBS) process is regarded as the most likely molding sand to realize green casting, owing to its low sodium silicate addition, rapid hardening speed, high strength, and excellent collapsibility. However, SSBS can absorb water easily in the air at room temperature.

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DIY Microwave Kiln Fuse Glass in Your Microwave : 32

After microwave curing the sodium silicate, the base was sanded. As you can see, I did not cover the whole side with the water-glass. We'll do it after sanding it. I also did not use a cling film this time. It's because we're sanding the blanket the flat side down. After sanding it, I finished covering the sides with sodium silicate.

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US5231268A Printed microwave susceptor Google Patents

Paperboard packaging material for use in the manufacture of containers or inserts for containers for browning and crisping in a microwave oven is prepared on a printing press. The components of the packaging material include board or an equivalent microwave transparent substrate, a susceptor layer prepared from a printable aqueous susceptor-ink

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IOP Conference Series: Earth and Environmental Science

In the process of microwave hardened sodium silicate sand of materials and equipment research and development has been more mature, the quantity of adding sodium silicate can be dropped to 1.5%, sand mold have good pieces. Microwave hardened sodium silicate sand advantages obviously, but strong hygroscopic [9].

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Humidity-resistant inorganic binder for sand core making

Jul 31, 2019Liu Fuchu, Fan Zitian, Liu Xinwang, et al. Research on humidity-resistance of Sodium Silicate Sand Hardened by Twice Microwave Heating Process. Advanced Manufacturing Processes, 2014, 29(2): 4. Google Scholar

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Sodium silicate Wikipedia

Sodium silicate is a generic name for chemical compounds with the formula Na 2x Si y O 2y+x or (Na 2 O) x (SiO 2) y, such as sodium metasilicate Na 2 SiO 3, sodium orthosilicate Na 4 SiO 4, and sodium pyrosilicate Na 6 Si 2 O 7.The anions are often polymeric.These compounds are generally colorless transparent solids or white powders, and soluble in water in various amounts.

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Effect of microwave curing as compared with conventional

Feb 10, 2020Microwave curing regime: Three main factors affects the microwave curing process, namely power level used (constant at 720 W), the application time (2 min, 4 min, and 6 min), and the delay time (time before the paste been cured), 1 day was the delay times studied in our research. Curing fresh pastes using the microwave needs special types of moulds as the

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Performances of sodium silicate sand hardened by microwave

The sodium silicate sand hardened by microwave heating has many advantages including high compression strength, high hardening speed, less addition of sodium silicate

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Sodium Silicate Plant techno-preneur

Introduction . An Indian consultancy company offers to supply sodium silicate plant on turnkey basis. The conventional process of manufacturing sodium silicate is by the reaction of silica sand with soda ash at about 1,100oC forming water glass, which is crusheddissolved in water and digested under pressure with steam.

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US6184427B1 Process and reactor for microwave cracking

A process of activated cracking of high molecular organic waste material which includes confining the organic waste material in a reactor space as a mixture with a pulverized electrically conducting material (sensitizer) and/or catalysts and/or “upgrading agents” and treating this mixture by microwave or radio frequency electro-magnetic radiation.

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IMPROVE THE HUMIDITY RESISTANCE OF SODIUM SILICATE

cluding sodium silicate molding sands. The microwave hardening of sodium silicate sands is low cost and en-ergy saving because the energy is delivered directly to the objects to be heated [2]. However, the microwave heating of sodium silicate sands requires high-quality mould materials and strong moisture absorbability of the sodium silicate sands.

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pulverizing process for sodium silicate production

absorbability of sodium silicate bonded sand hardened by microwave heating has significant theoretical and practical meaning for the production application of the microwave heating hardening sodium silicate bonded sand process 1 Experimental materials and methods The raw sand was coated with sodium silicate binder to form the specimens

get price

Effect of Surface Coating Strengthening on Humidity

The microwave heating sodium silicate bonded sand (SSBS) process is regarded as the most likely molding sand to realize green casting, owing to its low sodium silicate addition, rapid hardening speed, high strength, and excellent collapsibility. However, SSBS can absorb water easily in the air at room temperature.

get price

IOP Conference Series: Earth and Environmental Science

In the process of microwave hardened sodium silicate sand of materials and equipment research and development has been more mature, the quantity of adding sodium silicate can be dropped to 1.5%, sand mold have good pieces. Microwave hardened sodium silicate sand advantages obviously, but strong hygroscopic [9].

get price

Improve the humidity resistance of sodium silicate sands

An easy hardening method of sodium silicate sands, ester-microwave composite hardening, could decrease the sands mould absorbing moisture and the mould materials requirement. And it was performed by hardening the sodium silicate sands with a little ester, and then demoulding, finally hardening the non-mold sands with microwave energy.

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Microwave-assisted preparation of sodium-silicate

Oct 22, 2015Systematic studies on the preparation of sodium-silicate solutions of different compositions via the hydrothermal-microwave treatment of perlite with an NaOH solution were performed. The effect of various factors on the degree of SiO2 recovery and the reaction rate was studied. The application of microwave energy was established to intensify the process of

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US6184427B1 Process and reactor for microwave cracking

A process of activated cracking of high molecular organic waste material which includes confining the organic waste material in a reactor space as a mixture with a pulverized electrically conducting material (sensitizer) and/or catalysts and/or “upgrading agents” and treating this mixture by microwave or radio frequency electro-magnetic radiation.

get price

Sodium Silicate Plant techno-preneur

Introduction . An Indian consultancy company offers to supply sodium silicate plant on turnkey basis. The conventional process of manufacturing sodium silicate is by the reaction of silica sand with soda ash at about 1,100oC forming water glass, which is crusheddissolved in water and digested under pressure with steam.

get price

Humidity-resistant inorganic binder for sand core making

Jul 31, 2019Liu Fuchu, Fan Zitian, Liu Xinwang, et al. Research on humidity-resistance of Sodium Silicate Sand Hardened by Twice Microwave Heating Process. Advanced Manufacturing Processes, 2014, 29(2): 4. Google Scholar

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DIELECTRIC HARDENING METHOD OF SANDMIXES

sodium silicate, as well as make its use more reasona-ble. It was found by analysis of the researches compar-ing various methods of water-glass hardening, described in [6], that the methods involving the physical dehydra-tion process are distinguished by more profi table prop-erties than those hardened in the traditional process of purging

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Properties, Production and Uses of Sodium Silicate

The production process of sodium silicate is based on batch-wise operations. Sodium silicate can be produced by dissolving silica in molten sodium carbonate. It can also be produced in a reactor, by treating a mixture of caustic soda,water and

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WEI LI CARBOTHERMIC REDUCTION KINETICS OF ILMENITE

of sodium silicate. Microwave-absorbing characteristics of reduction products were measured by the method of microwave cavity perturbation. It was found that microwave absorbing characteristics of reduction products obtained at temperatures of 900, 1100 and 1150 °C have significant differences. XRD

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Microwave-Assisted Preparation of Sodium Silicate as

In this research, sodium silicate (Na2SiO3) was prepared by limestone husk ash reacted with 10 M sodium hydroxide. The mixtures were heated by microwave at 400, 600, and 800 watt for 5 and 10 minutes. The formation of sodium silicate was characterized by Fourier transform infrared spectrophotometer. The vibrations of (Na)O–Si–O(Na) and O–Si–O were observed at 595 and

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How to Dry Desiccant Sciencing

Mar 13, 2018Silica gel, a granule form desiccant made from sodium silicate, absorbs moisture from the air to reduce the relative humidity to about 40 percent. Manufacturers of edible and non-edible products often include silica gel packets in their packaging to

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