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All Journal Jurnal Teknologi Pertambangan Jurnal Manajemen dan Kewirausahaan (JMDK) Jurnal Ilmiah Manajemen Kesatuan Journal of Metallurgical Engineering and Processing Technology JWM (JURNAL WAWASAN MANAJEMEN) International Journal of Applied Business and International Management Journal of International Conference Proceedings Innovative: Journal Of Social Science Research
Tri Wahyuningsih
Jurusan Teknik Pertambangan, Fakultas Teknologi Mineral, UPN “Veteran” Yogtakarta
Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Journal : Journal of Metallurgical Engineering and Processing Technology

 1 
ANALISIS KUALITAS TERHADAP BATUGAMPING QUARRY HINGGA TEPUNG KALSIUM KARBONAT HASIL PRODUKSI DI PT. SUGIH ALAMANUGROHO Monika Asworo; Tri Wahyuningsih; Anton Sudiyanto; Olivia Silvi Hermanto; Meindra Setyawan
Journal of Metallurgical Engineering and Processing Technology Vol 3, No 1 (August 2022)
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v3i1.7038

Abstract

Limestone is a rock belonging to the type of sedimentary rock, formed as a result of a natural sedimentation process. Limestone is a type of non-metallic mineral that is used in various sectors, such as in the paint industry, glass industry, plastics, paper industry, liming on agricultural land and is also used in the metal smelting industry. Limestone products produced by PT. Sugih Alamanugroho is in the form of calcium carbonate flour (powder) with sizes of 800 and 1,200 mesh. Before being marketed, calcium flour will go through a series of quality analysis processes to determine moisture content, degree of whiteness and residual weight (+800 mesh). The water content test was analyzed using an infrared moisture determination balance tool, aiming to find out what percentage of the water content contained in limestone and calcium carbonate flour. The degree of whiteness was analyzed using a reflectometer. Residual testing was carried out by weight pf the residue after the drying process was carried out in the oven. Based on the data, the calcium carbonate flour produced has passed the quality test, with a moisture content <0.03%, a whiteness degree >89.6% and a residual weight (+800 mesh) <0.05% in accordance with the quality standards of limestone and calcium flour. carbonates that have been determined by the company. So that the packaging and marketing process can then be carried out.Keywords: Limestone, Calcium Carbonate Flour, Moisture, Whiteness, Residue Weight
Gold Extraction Process with Pre-Ox Sample and Aachen Assisted Leaching (AAL) using Running Aachen Dedi Pangestu; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11252

Abstract

The Center for Mineral and Coal Testing is an institution that works in the field of research services on mining and mineral processing. In the mineral processing research currently being carried out there is a research project related to increasing the efficiency of the leaching process using the Aachen Reactor. The samples used in this research were refractory gold samples. The problem of reducing the effectiveness of gold leaching is that there are minerals that are still included in the associated minerals, therefore a pre-treatment process is needed to remove these associated minerals. The Aachen reactor will help increase the efficiency of the leaching process by increasing Dissolve Oxygen levels to 30 ppm. In this study, two samples were used for comparison, namely the Pre-Ox sample and the Aachen Assisted Leaching (AAL) sample.
The Effect of Aloe Vera Bioreagent as a Frother and Collector in the Gold Ore Flotation Process on Increasing Grade and Recovery Aufa Asna; Azalia Songli; Rizka Nabilah; Syahwanul Ikhsan; M. Fajar Rickiadi; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11395

Abstract

One of the concentration processes in processing sulfide gold ore is the flotation technique which takes advantage of differences in mineral surface properties by adding chemical reagents. The addition of chemical reagents to the flotation process can cause environmental problems. Therefore, efforts are needed to replace chemical reagents with more environmentally friendly materials. In this research, an attempt was made to replace chemical reagents with a commonly found plant extract, namely aloe vera, as a bioreagent. Bioflotation experiments on a laboratory scale were carried out using a Denver flotation cell with an aloe vera reagent as a frother. This gold mineral bioflotation experiment was carried out on a 150 mesh size fraction. The results of increasing concentrate levels by flotation indicate that the aloe vera reagent as a frother is able to produce biosurfactants which replace chemical reagents as a more environmentally friendly biofrother and biocollector. This can be concluded based on flotation experiment data with bioreagent which has been tested showing an Au content value of 10.09 and a recovery of 96.15%, while flotation using chemical reagents shows an Au content value of 10.50 and a recovery of 95.96%. So the use of aloe vera as an environmentally friendly bioreagent in the flotation process releasing low sulfidation gold is more effective than the use of chemical reagents because it is indicated that there is a biosurfactant content in aloe vera.
AAS and XRD Analysis of Gold Ore Bioflotation Results with Aloe Vera as an Environmentally Friendly Reagent Sabrina Mantika; Farra Diva Prillasasti; Evan Nugrah Aurigha; Rike Amelia; M. Fajar Rickiadi; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11394

Abstract

Flotation is a mineral concentration method that involves floating the minerals so that they can be separated from the gangue by the addition of reagents. The reagents used are chemicals such as frother and collector, which can potentially contaminate the environment. This research explores the potential use of aloe vera as a separating reagent in environmentally friendly gold ore flotation. The feed used consists of 300 grams of gold ore, and the flotation time is set at 15 minutes. XRD analysis is employed to determine the types of minerals contained in the sample, revealing that the sample consists of 97.64% quartz; Enstatite, syn 1.21%; and Clinochlore-1A 1.16%. Atomic Absorption Spectrophotometry (AAS) is the technique used to determine the metal concentration in a sample. AAS analysis indicates an Au concentration in the feed of 3.94 ppm. The Au concentration in the concentrate with the addition of aloe vera extract is 10.57, and in the tailings, it is 0.92, higher than the concentration in the concentrate without the addition of aloe vera extract, which is 10.11, with 1.89 in the tailings. The %recovery from these concentrations with the addition of aloe vera extract is 84.06%, while without the addition of aloe vera extract, it is 63.78%. This study provides evidence that the use of aloe vera in the gold ore flotation process can be a sustainable and environmentally friendly alternative in the effort to improve the separation of valuable minerals from impurities.
Gold Extraction Process with Base-Case Sample and Aachen Assisted Leaching (AAL) using Running Aachen at The Mineral And Coal Testing Center Tekmira, Bandung Jawa Barat Oktavio Yorris Brilian; Tri Wahyuningsih
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11337

Abstract

The Center for Mineral and Coal Testing is an institution that works in the field of research services on mining and mineral processing. In the mineral processing research currently being carried out there is a research project related to increasing the efficiency of the leaching process using the Aachen Reactor. The samples used in this research were refractory gold samples. The problem of reducing the effectiveness of gold leaching is that there are minerals that are still included in the associated minerals, therefore a pre-treatment process is needed to remove these associated minerals. The Aachen reactor will help increase the efficiency of the leaching process by increasing Dissolve Oxygen levels to 30 ppm. In this study, two samples were used for comparison, namely the Pre-Ox sample and the Aachen Assisted Leaching (AAL) sample.
Co-Authors Akmal Rasyid Priyono Anton Sudiyanto Aufa Asna Azalia Songli Bakti Anugrah Hakim Dedi Pangestu Dika Setya Prayogi Evan Nugrah Aurigha Farra Diva Prillasasti Hadi Oetomo Hadi Oetomo Indun Titisariwati Indun Titisariwati Krisnandini Wahyu Pratiwi M. Fajar Rickiadi M. Fajar Rickiadi Meindra Setyawan Mifta Khurrohmah Monika Asworo Muhamad Kiki Ariyanto Muhamad Kiki Ariyanto Muhammad Evan Alhamda Oktavio Yorris Brilian Olivia Silvi Hermanto Rike Amelia Rinaldi Choirul Muarif Rivando Brillian Saerang Rizka Nabilah Sabrina Mantika Shafira Alya Endyanti Syahwanul Ikhsan Titik Kusmantini Untung Sukamto Wawong Dwi Ratminah Yuli Liestyana Yuli Liestyana Yuli Liestyana