Výsledky vyhledávání - "Dessy Amalia"

Purification of pregnant solution resulted from sphalerite concentrate extraction using sulfate acid for zinc oxyde production

Autor: Putri Dewi Novianti, Dessy Amalia, Yuhelda Yuhelda, Erlina Yustanti

Publikováno v: Indonesian Mining Journal. 22:77-86

Purification of pregnant solution from sphalerite concentrate extraction using sulfate acid to produce zinc oxide was meant to prepare zinc oxide production technology utilizing existing internal sphalerite mineral raw material. The pregnant solution

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::74925363fbfdb4b8fe7049c4c8b699ba
https://doi.org/10.30556/imj.vol22.no2.2019.1050

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The natures of zinc sulfide concentrates and its behavior after roasting process

Autor: Dessy Amalia, Yuhelda Dahlan, Tatang Wahyudi

Publikováno v: Indonesian Mining Journal. 21:99-112

The sample used for this study was a sulfide flotation concentrate that came from PT Lumbung Mineral Sentosa.The phase changes that occur in the particles of zinc sulfide concentrate during roasting in a muffle furnace were investigated using light m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b36d8ea37bcdfef586095137f07d39e
https://doi.org/10.30556/imj.vol21.no2.2018.698

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Parameters that affect the dissolution of Indonesian galena concentrate in fluorosilicic acid and hydrogen peroxide

Autor: Rezky Iriansyah Anugrah, M. Zaki Mubarok, Dessy Amalia

Publikováno v: Indonesian Mining Journal. 21:89-97

Pyrometallurgical process still dominates the extraction of galena concentrates. The process used to extract the lead includes reduction smelting in a blast furnace, air flash smelting (Boliden process), oxygen flash smelting (Kivcet, Boliden Kaldo,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d5a4dcd4dfff2758a6818bc62008118
https://doi.org/10.30556/imj.vol21.no2.2018.677

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Potency of making the chemical manganese dioxide (CMD) from East Nusa Tenggara pyrolusite

Autor: Azhari Azhari, Dessy Amalia

Publikováno v: Indonesian Mining Journal. 19:79-87

Chemical manganese dioxide has not yet commercially developed in Indonesia. It is supplied by import sector. The fact that Indonesia has manganese resources as many as 60,893,820 tons is inconsistent with above condition. Research on CMD making emplo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2acf5e8871c91da3f64d21d0455ab906
https://doi.org/10.30556/imj.vol19.no2.2016.415

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Processing zirconia through zircon sand smelting with NaOH as a flux

Autor: Yuhelda Yuhelda, Enggan P. Nugraha, Dessy Amalia

Publikováno v: Indonesian Mining Journal. 19:39-49

Zirconia had been made through smelting the zircon sand along with NaOH as a flux. The zircon sand as the smelter feed was taken from CV. Kurnia Alam Sejati mine at Palangkaraya, Middle Kalimantan. Major content of the zircon sand was 28.04% ZrO2 and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af65b271c6dbaaafed96972933eb805f
https://doi.org/10.30556/imj.vol19.no1.2016.364

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Extraction of lead from galena concentrates using fluosilicic acid and peroxide

Autor: Dessy Amalia, Yunita Ramanda, Maryono Maryono

Publikováno v: Indonesian Mining Journal. 20:69-80

A study on lead extraction from lead concentrate had been conducted. Galena is usually associated with other sulfide ores such as sphalerite.The lead concentrate was able to be extracted and purified into its metal through a leaching process using a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a67feaf719d66e9ca3c0534f7c738b5
https://doi.org/10.30556/imj.vol20.no1.2017.187

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Pelarutan bijih bauksit dengan soda kaustik (NaOH) menjadi larutan sodium aluminat (NaAlO2) skala pilot

Autor: Yuhelda Yuhelda, Dessy Amalia, Husaini Husaini

Publikováno v: Jurnal Teknologi Mineral dan Batubara. 12:149-159

Sodium aluminat (NaAlO 2 ) merupakan bahan kimia anorganik penting yang digunakan sebagai bahan baku untuk pembuatan berbagai macam produk kimia antara lain polialuminum chloride (PAC), alum, dan zeolit sintetik. Dalam penelitian ini, NaAlO 2 dihasil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::15cacdd46a4232cac196a94144646ec9
https://doi.org/10.30556/jtmb.vol12.no3.2016.134

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Kemampuan Komunikasi Matematis Siswa SMP melalui ELPSA Framework

Autor: M. Ikhsan, Rahmah Johar, Dessy Amalia

Publikováno v: JURNAL EKSAKTA PENDIDIKAN (JEP). 4:42

The mathematical communication ability of students is still low. One effort that can be done is to implement Experiences, Language, Pictures, Symbols, Application (ELPSA) framework. The pur pose of this research was to determine students' mathematica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d393d0d38884e7515c3f722e7eb563b8
https://doi.org/10.24036/jep/vol4-iss1/443

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Study on the leaching behavior of galena concentrate in fluosilicic acid solution using hydrogen peroxide as oxidant

Autor: Rezky Iriansyah Anugrah, Dessy Amalia, M. Zaki Mubarok

Publikováno v: AIP Conference Proceedings.

Lead (Pb) extraction from galena through leaching has not been commercialized in Indonesia. Therefore, the study of leaching behavior of Bogor galena concentrate in fluosilicic acid (H2SiF6) solution with hydrogen peroxide (H2O2) as oxidant was studi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ad2be46da54f7dbf1dd5c4c6a02952d
https://doi.org/10.1063/1.4974417

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