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INDONESIA
Jurnal Keramik dan Gelas Indonesia
Published by Kementerian Perindustrian Republik Indonesia
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Articles 89 Documents
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Technoeconomic Study of Belitung Kaolin as Import Substitution Material in Fiber Cement Board Production nurhidayati nurhidayati; kristanto wahyudi; faiza elisa hasfianti
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6714

Abstract

Cement board that commonly used as raw material for cheap housing component is calcium silicate cement board (fiber cement boards). However, the clay used as raw material for cement boards is still imported. In 2019, imported clay used for construction industry in Indonesia amounted to 57,000 tonnes per year with a transaction value of more than US $ 38 million. On the other hand, Indonesia, especially the province of Bangka Belitung, has a value of kaolin resources of 376,687,532 tons. Baristand Banjarbaru has successfully applied Belitung kaolin as a substitute for imported clay in cement board production. The physical properties of cement board made of kaolin Belitung were not significantly different from cement board made of imported clay.Therefore, Belitung kaolin has the potential to become a substitute for imported clay in cement board production and can be increased in terms of production scale so a techno-economic study is needed. Technoeconomic study had analyzed with the assumptions for a cement board production capacity of 100 tons / day, an investment age of 5 years, an initial investment of 0 for imported clay as raw material and 13,167,000,000 for kaolin as raw material or equivalent to 30% of sales. With the selling price of cement board Rp.55,000 / kg, the NPV of Belitung kaolin is 86,071,631,216.30 and the NPV of imported clay is 77,604,584,262.66. These results indicate that the cement board production business using Belitung kaolin as raw material is feasible to develop.
Low Cost Non-Destructive Monitoring of Dry Milling Process of Ilmenite Material Using Acoustic Sound Wave to Support Industry 4.0 Handoko Setyo Kuncoro; Dadan Sumardan
Jurnal Keramik dan Gelas Indonesia Vol 29, No 1 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i1.6363

Abstract

The potential utilization and characteristics of acoustic sound waves in the frequency range of 100-10000 Hz for the monitoring process of dry milling of industrial ilmenite materials are evaluated based on the evolution of sound intensity level and the number of peaks in the spectrumwaves.The methodology in this applicative research follows the steps of material preparation activities, dry milling process, acoustic milling emission monitoring, particle size shieving / filtering, quantization of particle size distribution and evaluation of research data.The milling times from 0.5, 15 to 30 hours are taken as a variation of the study. Statistical ANOVA evaluation results show a significant relationship between milling time and the characteristics of the peak number of acoustic wave emited milling process.Higher color gradient in the evolution plot of the frequency spectrum between 160-640 Hz decreases with increasing milling time and decreasing particle size distribution.The number of spectral peaks also increases with increasing milling time.This indicates the effectiveness of collision by alumina balls in the processed ilmenite material using dry milling and has potential implications for the use of a more controlled and efficient ball mill in the future of ceramic industry.
Halaman belakang jkgi vol 29 no 2 tahun 2020 rifki septawendar
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6797

Abstract

Synthesis of -TCP by Wet Precipitation Method from Natural Lime Ayu Ratnasari; Naili Sofiyaningsih; Muhammad Syaifun Nizar; Hernawan Hernawan
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6711

Abstract

Beta-tricalcium phosphate (β-TCP) is a biomaterial that is widely used as bone scaffold and calcium phosphate cement. β-TCP has excellent characteristic such as biocompatible, highly solubility, and faster degradation rate than other types of calcium phosphate. In this research, β-TCP was synthesized from natural limestone and phosphoric acid. The synthesis method used is wet precipitation method. Phosporic acid solution was added by titration at rate of 0,5 mL per second. Temperature reaction controlled at 60⁰C meanwhile calcination process at 800⁰C and 1000⁰C. The mineralogy characteristic by  X-Ray Diffractometer (XRD) showed that β-tricalcium phosphate main phase was formed at 800⁰C and while characterization of chemical content with X-Ray Flourescence (XRF) β-TCP has a Ca/P molar ratio of 1,35-1,37.
The Utilization of Rice Husk Charcoal as a Source of Silica in The Synthesis of Forsterite in Air Medium Haryono MT; Solihudin Solihudin
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6421

Abstract

Forsterite has a heat resistance property at high temperatures so it has the potential as a refractory material. As the main agricultural commodity in Indonesia, rice is a potential raw material as a source of amorphous silica and carbon through the partial burning process of rice husks. This study aims to determine the effect of calcination temperature in air medium on the process of forming forsterite from MgCO3 and rice husk charcoal. The forsterite/carbon synthesis was carried out at a mole ratio of MgCO3 to SiO2 of 2:1. The research method includes the preparation of rice husk charcoal by gasification; synthesis of forsterite with variations in calcination temperature at 700, 800, 900, and 1000 oC for 2 hours; and characterization of synthesis results using FTIR and XRD. The results showed that the higher the calcination temperature, based on the formation of bonds from the results of FTIR analysis and XRD diffractogram, the more the forsterite structure was formed. Calcination at 1000 oC is the optimum temperature for the formation of forsterite.
Effect of Precursor on the Mineralogy and Microstructure Characteristic of Nano Zirconia by Template Method Naili Sofiyaningsih; Suhanda Suhanda; Rifki Septawendar
Jurnal Keramik dan Gelas Indonesia Vol 29, No 1 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i1.6237

Abstract

Nano zirconia     were successfully synthesized from Zr(OH)4 dan ZrOCl2 using a template method. Polyvinyl alcohol was added as a template or a surfactant to control the particle size of nano zirconia. Zirconia precursors were reacted with polyvinil alcohol at a stoichiometric and nonstoichiometric ratio in water solvent at about pH 4 and then calcined at a temperature of 800⁰C. The result showed the precursor types obviously affected the mineralogy and microstructure characteristics of nano zirconia.  The reaction between Zr(OH)4 and polyvinyl alcohol produces tetragonal zirconia in the form of nanorods with a diameter of 100 nm and 500 nm - 1μm in length, and elongated agglomerates consisting of nanoparticles less than 100 nm in sizes. Meanwhile, the reaction between ZrOCl2 precursor with polivinyl alcohol at pH 4 leaded to formation of monoclinic zirconia with microstructures such as nanorods with diameter of 10~100 nm and 100~500 nm in length, agglomeration of nanoparticles <100 nm, and  packing sheets.
Synthesis of Anhydrous Dicalcium Phosphate for Precursor of Natural Ceramic Apatite Material Muhammad Syaifun Nizar; Rizky Berliana Wijayanti; Kristanto Wahyudi
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6667

Abstract

Dicalcium phosphate is one of the apatite materials used for precursors to synthesize other apatite materials such as tricalcium phosphate, tetracalcium phosphate, and hydroxyapatite. Apatite materials are widely used in the medical field and pharmaceutical industry. This study aims to prepare dicalcium phosphate from natural limestone as a precursor for apatite with an easy-to-apply method for industrial scale. Wet precipitation process was performed to prepare dicalcium phosphate from phosphoric acid and slaked lime or calcium hydroxide with reaction temperature control at around 60⁰C and at pH of 3-4, then drying is carried out at about 180⁰C. The product is characterized for its mineral content by XRD and EDX. Semi-quantitative calculation of the synthesized material contains more than 90% dicalcium phosphate andhydrous, the rest is other apatite minerals. It can be used as a precursor for apatite production.
Study of Reduced Graphene Oxide addition on the Electrical Conductivity and Flexural Strength of Metakaolin-based Geopolymer Elsy Rahimi Chaldun; Andrie Harmaji; Nindya Kirana Prabaswari; Lina Nur Listiyowati; Achmad Subhan; Syoni Soepriyanto
Jurnal Keramik dan Gelas Indonesia Vol 29, No 1 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i1.6048

Abstract

Geopolymer with reduced Graphene Oxide (rGO) composite obtanined through Hummers method. This material is a substitute option for graphene because the nature of rGO is easier to produce in large quantities. In theory, it is expected that rGO can increase the flexural strength and electrical conductivity of geopolymer. The rGO composition used varies from 0-1 wt%. Geopolymer and their constituents were characterized by the Three Point Bending, EIS, SEM, FTIR, XRD, and XRF tests. Fly ash-based geopolymers have a flexural strength of 5.2 MPa at a composition of 0.5 wt% rGO, while metakaolin-based geopolymers with an addition of 0.25% rGO produce the highest flexural strength of 5.53 MPa. A frequency of 100,000 Hz tends to facilitate greater electrical conductivity, on fly ash-based geopolymers found electrical conductivity of 5.08 x 10-3 S / m, while for metakaolin-based geopolymers the electrical conductivity is higher ie 1.01 x 10-1 S / m. 
Macroporous Ceramic Filter through Polyurethane Template Replication Method: Characterization and Detergent Wastewater Filtration Trials Eneng Maryani, S.Si, M.T.; Riska Maspupah; Eko Prabowo Hadisantoso
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6713

Abstract

Macroporous ceramic filters were made through the template replication method with raw materials, i.e. clay, silica sand and iron oxide powder with a ratio of 70: 27.5: 2.5. The mixture of these ingredients was wet milled in a potmill for 5 hours. Polyurethane as a template was dipped in the mixture slurry with a variation dipping time of 6 and 24 hours. The greenbody filter was calcined at temperature of 900oC with a slowly heating rate. The resulting filter was macroporous with very porous morphology and has interconnections or channels between pores. The pore diameter of the filter which was not added with iron oxide was 1.87 mm and the pore wall was 0.31 mm. The filter added with iron oxide had the highest density and porosity, that is 1.9004 g/cm3 and 38.49%. Filters made of iron oxide powder added material show better filtration performance for pH, TSS and COD parameters for 1% detergent water and detergent wastewater. The best results for the filtration of detergent water samples were pH to 9, TSS reduced by 34.45% and COD decreased by 24.99%.
Synthesis and Characterization of Cetyl Piridinium Chloride Modified and Al2O3 Pillared Clay ferry arifiadi; Irna Rosmayanti; Herlina Damayanti; Hernawan Hernawan; Kristanto Wahyudi
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6673

Abstract

Bentonite is a mineral that is very abundant in Indonesia and has the potential to be developed, one of which is by adding intercalant to obtain a modified bentonite with the desired characteristics. In this study, the synthesis was carried out by the intercalation method by surfactant Cetyl pyridinium Chloride (CPC) with % weight variations and then followed by pillarization with aluminum polyoxo. Then the resulting solid phase is calcined at a temperature of 450oC. The results obtained were that bentonite with modified CPC and aluminum polyoxo had higher basal distance and surface area characteristics compared to natural bentonite and this increase was also proportional to the amount of CPC added before the pillarization process. The best modification value in the addition of CPC was 36% by weight with a basal distance of 16,8898 Å and a surface area of 276.478 m2 / g. From this research, it can be concluded that the addition of CPC and aluminum polyoxo to bentonite can increase the basal distance and its surface area. The added CPC concentration also has an effect on increasing the number of pillar cations that enter the bentonite so that the pillarization that occurs in bentonite is more and causes the characteristics of the bentonite to be better.

Page 7 of 9 | Total Record : 89

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