Effect of Molding Method on the Properties of Prepared Quartz Sand Sintered Brick Using the River Sand

Chen, Mei Hua; Yang, Yan; Chen, Wang; Song, Jie Guang; Liu, Yue; Guo, X.; Lin, Chao; Guo, Song Lin; Qin, Yue

doi:10.4028/www.scientific.net/ssp.279.261

Cited by 3 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the cold-bonding process, particles with inhomogeneous size and irregular shape may cause more pores to form inside of the briquette. This phenomenon is named the arch bridge effect [ 28 ]. The microstructures of Si and Si 3 N 4 powders are shown in Figure 2 a,b, respectively.…”

Section: Resultsmentioning

confidence: 99%

A Novel Method of Si and Si3N4 Powder Resources Recycling: Cold Bonding Briquettes

Xiong

Chen

et al. 2022

Materials

View full text Add to dashboard Cite

Silicon nitride (Si3N4) and silicon powder (Si) are two kinds of harmful solid waste in industrial production. As an environmental and low-consumption method, the cold-bonding technique is a novel method to utilize the problem of powder resource cycling. In this experiment, mechanical and high-temperature properties of Si and Si3N4 briquettes were studied after cold bonding. The results are as follows: (1) The compressive strength of the Si and Si3N4 briquettes increased with the improvement of molding pressure. With the same binder (1 wt.%) and water (10 wt.%) addition, the compressive strength of the Si3N4 briquette arrived at 12,023.53 N under 40 Mpa molding pressure, which is much higher than that of the Si briquette (942.40 N). The Si particles are uneven and irregular, which leads to an intense arch bridge effect in the Si briquette and the compressive strength decrease. Compared with Si powder, the particle size and shape of Si3N4 is small, uniform, and regular. The influence of the arch bridge effect is smaller than that in the Si briquette. (2) After being treated at 1473 K for 1 h, the compressive strength of the Si briquette increased to 5049.83 N, and the compressive strength of the Si3N4 briquette had a slight change. The surface of the briquettes was contacted with oxygen and reacted to form an outer shell which mainly contains SiO2 in the high-temperature treatment. FT-IR results have shown there were no extra impurities in cold-bonded briquettes when using the organic binder. (3) The microstructure of the cross section of the Si and Si3N4 briquettes after high-temperature treatment presented that oxygen entered the briquette through the pores and continued to react with the Si and Si3N4. The outer shell of the Si briquette grew and thickened continuously with the oxygen spreading in the Si briquette. However, because of the smaller particle size and regular shape, little oxygen diffused in the Si3N4 briquette. The outer shell of the Si3N4 briquette is fairly thin, so the compressive strength did not change too much.

show abstract

Section: Resultsmentioning

confidence: 99%

A Novel Method of Si and Si3N4 Powder Resources Recycling: Cold Bonding Briquettes

Xiong

Chen

et al. 2022

Materials

View full text Add to dashboard Cite

show abstract

“…By adjusting the process, the step-up and depressurization processes are advanced in a certain gradient, and a material with good appearance and appearance is obtained. As for the specific gradient process, a further study is needed [20][21].…”

Section: Resultsmentioning

confidence: 99%

Effect of Forming Technology on the Properties of Quartz Sands Porous Materials via Dry Pressing Method

Qin

Zhou

et al. 2020

KEM

Self Cite

View full text Add to dashboard Cite

The effect of forming technology on the properties of quartz sand porous materials were researched with the low grade quartz sand along the Yangtze River via the pressureless sintering method in this paper, which lay technology foundation for researching new heat insulating materials. The wear of ball milling media is investigated through adjusting the ball milling parameter via the weigh methods. The results are shown that the porosity of quartz sand porous materials are decreased with increasing a forming pressure. The porosities of Φ30 and Φ50 materials are decreased with increasing a holding pressure time, however, the porosity decreasing rate of Φ30 is slower than that of Φ50. The porosity of Φ50 is higher than that of Φ30 under same forming conditions. Through optimized the forming conditions, the porosity of sintered Φ50 quartz matrix porous materials reaches 54.52% under the forming pressure for 5MPa and the holding pressure time for 5min.

show abstract

“…According to the XRD and IR spectoscopy data (see Figs. [5][6][7]12), these changes in W depend on the content of the amorphous (vitreous) phase in specimens. The larger the content of the amorphous phase, the smaller the water absorption because open pores are filled by liquid melt.…”

Section: Water Absorption In Ceramic Specimensmentioning

confidence: 99%

“…In [1], a technology that makes it possible to realize the low-temperature synthesis of bricks from high-siliceous clays by the method of plastic molding of blanks was presented, though it is known that ceramics of this type is usually obtained from clays by dry or semidry pressing of blanks with subsequent high-temperature sintering [1][2][3][4][5][6]. It was established that for the initiation of the plastic properties of the material, it is necessary to introduce a small amount of montmorillonite/bentonite and water into high-siliceous clay.…”

Section: Introductionmentioning

confidence: 99%

Low-temperature sintering of high-siliceous clay under conditions of oxygen deficiency

et al. 2021

View full text Add to dashboard Cite

In the work, the processes of phase reconstruction and properties of ceramics obtained from high-siliceous clay-sand, clay-cullet, and clay-sand-cullet mixtures are considered. It is possible to perform plastic molding of blanks from the given mixtures due to the presence of montmorillonite in clay and sand and sintering at 800 oC for 8 h under conditions of oxygen deficiency. Depending on the composition of the initial mixtures, specimens ranging in color from gray to black can be obtained. It has been established by the XRD, IR spectroscopy, and electron microscopy methods that the synthesized material is glass ceramics consisting of quartz, feldspars, and a glass phase. Depending on the content of the initial components in the mixtures, it is possible to obtain glass ceramics with high strength properties or coarse-pored glass ceramics whose properties are similar to those of foamed ceramics.

show abstract

Effect of Molding Method on the Properties of Prepared Quartz Sand Sintered Brick Using the River Sand

Cited by 3 publications

References 14 publications

A Novel Method of Si and Si3N4 Powder Resources Recycling: Cold Bonding Briquettes

A Novel Method of Si and Si3N4 Powder Resources Recycling: Cold Bonding Briquettes

Effect of Forming Technology on the Properties of Quartz Sands Porous Materials via Dry Pressing Method

Low-temperature sintering of high-siliceous clay under conditions of oxygen deficiency

Contact Info

Product

Resources

About