p–ISSN: 2723 - 6609 e-ISSN: 2745-5254
Vol. 5, No. 11 November 2024 http://jist.publikasiindonesia.id/
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4804
Increase The Percentage of Coal Conservation Deposited in
ROM Drainage Areas
Aifah
1*
, Ryan Afif Hendrawan
2
, Fransiskus Bimantoro Agung
4
,
Jepri Victor
5
PT Antareja Mahada Makmur, Jobsite Borneo Indobara Hati'if,
Kalimantan Selatan, Indonesia
Email:
[email protected]
1*
, [email protected]
2
*Correspondence
ABSTRACT
Keywords: Coal
conservation; fine coal
management; environmental
pollution; ROM drainage
area; root cause analysis;
Fishbone diagram.
The research aims to increase the conservation percentage of
trapped coal in the ROM A1 drainage area from February to June
2024 by improving fine coal management and adding value to the
conservation of PJP. This study also seeks to reduce penalties
from fine coal blending into sellable products and minimize
environmental pollution in the ROM A1 area. The study employs
a descriptive method, focusing on implementing coal conservation
in drainage areas by determining the scope of each conservation
object. Root cause analysis using a Fishbone diagram was used to
identify key improvement strategies for increasing coal
conservation percentages. Initial observations in the ROM A1
drainage area revealed 6,829 tons of unpreserved fine coal,
primarily due to rainwater runoff. The results showed that with
proper implementation of conservation techniques, including the
installation of fine coal traps and the centralization of fine coal in
collection points, the conservation rate improved from 0% to 62%
by April 2024. In tangible terms, 83 tons of fine coal, worth IDR
26,434,928, were saved, contributing to both environmental
conservation efforts and economic benefits for the company. This
study highlights the importance of continuous coal conservation
efforts, especially in mining operations where environmental and
financial impacts can be significant.
Introduction
Mineral and coal conservation is an effort to optimize the management, utilization,
and data collection of mineral and coal resources in a measurable, efficient, responsible,
and sustainable manner. Mineral and coal conservation is one of the aspects that must be
carried out in accordance with the Mineral and Mineral Law Attachment VII of the
Ministry of Energy and Mineral Resources No. 1827 K/30/MEM/2018 to realize the
principles of good mining techniques (Good Mining Practice). Planning for the optimal
implementation of mineral and mineral conservation is carried out by first determining
the scope of mineral and mineral conservation in detail as well as evaluating and
monitoring the implementation and the obstacles that occur in its implementation. The
Aifah, Riyan Afif hendrawan, Fransiskus Bimantoro Agung, Jepri Victor
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4805
scope of coal conservation includes mining recovery, processing recovery, low-quality
coal, residual processing products, marginal reserves, and unmined reserves.
PT Antareja Mahada Makmur is a subsidiary of PPA, which is also a coal contractor
company. The types of activities carried out include stripping the rock/cover soil subfield
excavation, loading and removing the layer (stripping) of rock/cover soil with or without
being preceded by blasting, and Transportation Services. With operational activities that
are closely related to coal, the implementation of good mining engineering principles,
especially the conservation aspect of the implementation of coal conservation through
determining the scope of conservation objects and solving problems that occur after the
evaluation process so that it can be followed up, is something that must be understood
and considered in the implementation of mining activities.
The objectives of this study are:
1. Increasing the percentage of coal conservation deposited in the new ROM A1
drainage area in February – June 2024 through good fine coal management, and
adding value to the PJP conservation aspect
2. Saving penalty costs from fine coal that is deblended into products sold by the owner
3. Reduces the level of environmental pollution in the new ROM A1 area.
Research Methods
The research method used is descriptive. This study will explain the implementation
of the drainage area's conservation level by determining the scope of each conservation
object. This study also compared what can be done to increase the percentage of coal
conservation deposited in the new ROM A1 drainage area with Root cause analyst
Fishbone.
Data collection in this study was conducted through direct field observations in the
ROM A1 drainage area, interviews with workers related to coal conservation, and
documentation related to coal management activities at PT Antareja Mahada Makmur.
Quantitative data were gathered from records pertaining to coal production and
management, including the volume of discarded fine coal, precipitation levels, and the
efficacy of the fine coal capture system. In addition, qualitative data were gathered
through in-depth interviews with the objective of gaining insight into the challenges and
opportunities associated with the implementation of coal conservation measures.
The data were analyzed using a descriptive approach. The quantitative data were
processed using simple statistical methods to calculate the percentage change in coal
conservation, the decrease in the amount of wasted fine coal, and the estimated economic
value saved. The qualitative data were analyzed using a thematic approach to identify
root cause factors that affect the level of conservation. Fishbone diagrams were used as a
visual aid to map the relationships between the various causal factors and plan corrective
measures.
Increase The Percentage of Coal Conservation Deposited in ROM Drainage Areas
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4806
Results and Discussion
The Root of the Problem
In the Ministry of Energy and Mineral Resources No. 1827 of (2018) concerning
Guidelines for the Implementation of Good Mining Engineering Principles, especially in
Appendix VII concerning Guidelines for the Implementation of Mineral and Coal
Conservation, it is stated straightforwardly regarding the scope and objects of mineral and
coal conservation. There are 8 (eight) mineral and coal conservation objects, including
mining recovery, processing recovery, low-quality coal, low-grade minerals,
accompanying minerals, marginal reserves, residual processing and refining products,
and unmined reserves (Dzakir et al., 2023; Singo, 2020; Young et al., 2022).
PT Antareja Mahada Makmur Site Borneo Indobara is engaged in Mining
contractor services with the process business of coal transportation and loading services
(ROM Management). This is, of course, very related to the implementation of the
conservation of the new ROM A1 condition. When the Lost Coal observation was carried
out, coal splatters in drainage were found, which were suspected to be caused by dissolved
rainwater. Improvements focus on the new A1 ROM due to its longer lifespan.
Figure 1. Observation Area Lost Coal
Based on observations, the ROM A1 N drainage area has 68.29 tons of fine coal
that has not been conserved (Wills & Finch, 2015). From November to January 2023,
there was rain with an average of 85.94 hours and a discharge of 204.32 m3/hour.
Aifah, Riyan Afif hendrawan, Fransiskus Bimantoro Agung, Jepri Victor
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4807
Figure 2. Volume ton Fine Coal When it rains
Rain conditions with the above discharge certainly affect lost coal in the area of
catchment drainage, so this project is carried out to save coal that is wasted in the drainage
area due to rainwater flow and should be able to be used again as a product (Habel et al.,
2023; Juwono & Subagiyo, 2018).
Figure 3. Conservation Level
Based on the data graph above, the conservation rate of fine coal in the ROM A1 N
drainage catchment area in November – January is still 0% or has not been implemented.
Therefore, it is necessary to carry out coal conservation in the catchment area of ROM
A1 drainage (Eterigho-Ikelegbe et al., 2021; Harrar et al., 2022; Vidya & Ilianta, 2020).
Conservation Level
Increase The Percentage of Coal Conservation Deposited in ROM Drainage Areas
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4808
Figure 4. Estimated QCC
Figure 5. Root cause Analyst -Fishbone
Planning
The estimated QCC benefits above are the baseline VS Target in the coal
conservation level in the new ROM A1 drainage area based on the Rootcause Analyst
fishbone (Bazalgette et al., 2022). A plan for improvement ideas from conservation
problems related to fine coal emerges as follows:
Aifah, Riyan Afif hendrawan, Fransiskus Bimantoro Agung, Jepri Victor
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4809
Table 1. QCC Plan
N
O
CATEGO
RY
WHAT
The Root
of the
Problem
HOW
Corrective
action plan
MoE
Process
KPIs
WH
O
PIC
WHE
N
Due
Date
WHER
E
Locati
on
HOW
MUCH
Cost
1
Method
The
drainage
area is not
given a
fine coal
trap
Making fine
coal traps in
drainage
Producti
on
Ryan
, GL
RO
M
Week
4
Januar
y
2024
ROM
A1
6 jam x
225.000
RP
1.350.0
00
2
Material
Coal
material
in
drainage
is thin and
not
concentrat
ed at a
point
Picking up fine
coal that has
been
concentrated in
the control box
Producti
on
Ryan
, GL
RO
M
Week
4
April
2024
ROM
A1
2,8 jam
x
225.000
Rp
630.000
3
Environme
nt
There is
no design
for the
location
of the fine
coal trap
Create a fine
coal trap
location design
Producti
on
Ryan
, GL
RO
M
Week
3
Januar
y
2024
ROM
A1
-
4
Man
There has
been no
socializati
on of how
to
conserve
coal in
drainage
Conducting
socialization/st
udy of coal
conservation in
drainage
Producti
on
Ryan
, GL
RO
M
Week
3
Januar
y
2024
ROM
A1
-
Increase The Percentage of Coal Conservation Deposited in ROM Drainage Areas
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4810
Implementation of the Fix Idea
NO.
What
Before Condition
After Conditions
1
METHODE
The drainage area is
not given a fine coal
trap
In the drainage area,
there is a fine coal trap
Figure 6. Methode
NO.
What
Before
Condition
After Conditions
2
MATERIAL
Coal material in
drainage is thin and not
concentrated at a point
Fine coal extraction that has
been concentrated in the
controlbox
Figure 7. Material
NO.
What
Before Condition
After Conditions
3
ENVIRONTMENT
There is no design for
the location of fine coal
deposits
There is a design for the
placement of the fine coal
sedimentation system
Aifah, Riyan Afif hendrawan, Fransiskus Bimantoro Agung, Jepri Victor
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4811
Figure 8. Environmen
NO.
What
Before Condition
After Conditions
4
MAN
There has been no
socialization of how to
conserve coal in
drainage
There is socialization of how to
conserve coal in drainage
Evaluate Results
Based on the results of the evaluation, there was a significant increase in coal
deposits in the ROM A1 New drainage area from 0% to 62% for the period of February
– April 2024.
Increase The Percentage of Coal Conservation Deposited in ROM Drainage Areas
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4812
Figure 9. Calculation of Wasted Coal Slag in Drainage
Figure 10. Percentage of Coal Slag Wasted in Drainage
The tangible benefits obtained are 83 tons of fine coal saved from the drainage area
worth Rp. 26,434,928 in terms of mining services, which can continue in the following
month based on coal in the control box and coal sales of 83 tons worth Rp. 49,067,390.
Meanwhile, the intangible benefits are an additional conservation effort in the 2024 PJP
assessment.
Comparison of the previous QCC estimate Baseline increased as follows:
a) Quality
Saving wasted coal in drainage areas by 0.2% of runoff water volume
b) Cost
83 tons of coal saved by mining services worth Rp. 26,434,928, coal sales of Rp.
49,067,390
c) Delivery
Percentage of Coal Slag Wasted in
Drainage
Aifah, Riyan Afif hendrawan, Fransiskus Bimantoro Agung, Jepri Victor
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4813
The management of fine coal in the ROM A1 drainage area was well conveyed to the
new ROM A1 workers at the time of socialization
d) Safety
Reducing the level of environmental pollution in the ROM A1 new area
e) Moral
Increased awareness of ROM workers on the importance of fine coal management in
drainage areas
Next QCC Ideas
After an improvement to the Baseline of planning and implementation of QCC
Implementation of the Coal Slag System, the optimization of sediment in the drainage
area on all sides of the initial ROM formation.
Figure 11. Coal System Slate Site Design
Conclusion
The implementation of mineral and mineral conservation starts from the planning
stage to the implementation of the plan for mining activities and the evaluation of the
implementation of these activities. The implementation of conservation aspect activities
in the form of a control box (Fine coal management in the ROM A1 New drainage area)
to reduce the level of pollution in the mining environment that the next QCC idea needs
to be further improved related to the conservation aspect.
Bibliography
Arif, I. (2018). Nikel Indonesia. PT. Gramedia Pustaka Utama.
Bazalgette, L., Aamri, N., Field, C., Bos, R., Tooqi, S., Wei, L., Nofli, K., Manji, K., Hadhrami,
W., Shizawi, W., Hasni, A., Shuaili, S., Shuaili, K., Al Bahri, S., & Al Jabri, Y. (2022,
October 31). Natural Fractures Help Unlocking Tight Carbonates: Re-Developing the Natih
B Reservoir in a Giant Field in the Sultanate of Oman. Day 1 Mon, October 31, 2022.
https://doi.org/10.2118/211336-MS
ROAD
PLAN
ACCES
S
Increase The Percentage of Coal Conservation Deposited in ROM Drainage Areas
Jurnal Indonesia Sosial Teknologi, Vol. 5, No. 11, November 2024 4814
Dzakir, L. O., Dullah, N. M., Prianata, Y. L. O., Yudha, W., Kurnia, LM. H., Kadar, M. I.,
Shaddad, A. R., Amir, Muh. K., Ambarsari, I. S., & Aldiyansyah, A. (2023). Teknis
Penambangan Nikel. CV. Tohar Media.
Eterigho-Ikelegbe, O., Harrar, H., & Bada, S. (2021). Rare earth elements from coal and coal
discard – A review. Minerals Engineering, 173, 107187.
https://doi.org/10.1016/j.mineng.2021.107187
Habel, M., Nowak, B., & Szadek, P. (2023). Evaluating indicators of hydrologic alteration to
demonstrate the impact of open-pit lignite mining on the flow regimes of small and medium-
sized rivers. Ecological Indicators, 157, 111295.
https://doi.org/10.1016/j.ecolind.2023.111295
Harrar, H., Eterigho-Ikelegbe, O., Modiga, A., & Bada, S. (2022). Mineralogy and distribution of
rare earth elements in the Waterberg coalfield high ash coals. Minerals Engineering, 183,
107611. https://doi.org/10.1016/j.mineng.2022.107611
Juwono, P. T., & Subagiyo, A. (2018). Sumber Daya Air dan Pengembangan Wilayah:
Infrastruktur Keairan Mendukung Pengembangan Wisata, Energi, dan Ketahanan Pangan.
Universitas Brawijaya Press.
Keputusan Menteri ESDM No. 1827.K/30/MEM/ESDM/2018 tentang Kaidah Teknis
Pertambangan Yang Baik
Keputusan Menteri ESDM No. 1806.K/30/MEM/ESDM/2018 tentang Pedoman
PelaksanaanPenyusunan, Evaluasi, Persetujuan Rencana Kerja dan Anggaran Biaya, serta
Laporan pada Kegiatan Usaha Pertambangan Mineral dan Batubara
Keputusan Direktur Jenderal Mineral dan Batubara No. 1827.K/30/DJB/2020 tentang Petunjuk
Teknis Pelaksanaan Konservasi Mineral dan Batubara dalam rangka Pelaksanaan Kaidah
Teknis Pertambangan Yang Baik.
Peraturan Menteri ESDM No. 26 Tahun 2018 tentang Kaidah Pertambangan Yang Baik dan
Pengawasan Pertambangan Minerba
Singo, N. K. (2020). In Search of the Possible Economic Potential, Through Conceptual Study
on Reclamation, of Defunct Mine Residue Areas for Development Purposes: Case Study of
Musina Copper Mine, Giyani Louis Moore Gold Mine, Zwigodini Nyala Magnesite Mine,
South Africa. University of Johannesburg (South Africa).
Vidya, D., & Ilianta, I. (2020). Ruang Lingkup dan Objek Konservasi Sumber Daya Mineral dan
Batu Bara. Perhapi: Prosiding Temu Profesi Tahunan Perhapi, 221–232.
Wills, B. A., & Finch, J. (2015). Wills’ MineraWills’ mineral processing technology: an
introduction to the practical aspects of ore treatment and mineral recoveryl Processing
Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral
Recovery. Butterworth-heinemann.
Young, R. E., Gann, G. D., Walder, B., Liu, J., Cui, W., Newton, V., Nelson, C. R., Tashe, N.,
Jasper, D., Silveira, F. A. O., Carrick, P. J., Hägglund, T., Carlsén, S., & Dixon, K. (2022).
International principles and standards for the ecological restoration and recovery of mine
sites. Restoration Ecology, 30(S2). https://doi.org/10.1111/rec.13771