浸泡与否对岩矿石密度测定的影响

doi:10.11720/wtyht.2021.1318

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Abstract

Rock density determination is an important method to obtain accurate density values, and it is also an indispensable parameter for topographic correction and middle layer correction of gravity measurement results. The higher the accuracy of density measurement, the higher the accuracy of geological interpretation. However, there are different opinions on whether soaking treatment is needed before the determination of rock density in different versions of measurement specification. In this paper, we taking 12 kinds of rock (ore) specimens in Bayan Obo mining area as an example, comparing the density changes before and after soaking. It is concluded that the density of rock increases in varying degrees after soaking, except mica-type iron ore. For rocks (ores) with developed pores or fissures, the percentage of density difference after soaking is greater than 0.5%, and the density difference percentage will be greater than 0.5%. However, for the rock (ore) with dense structure, the influence of soaking on the density measurement is less than 2 times of the measurement error, which is negligible.

Key words： density density determination soaking physical property analysis

Received: 18 June 2020 Published: 01 March 2021

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	Articles by authors
	Bai-Fan ZHANG
	Feng XIAO
	Yi-Ke LI
	Chang-Hui KE

Cite this article:

Bai-Fan ZHANG,Feng XIAO,Yi-Ke LI, et al. The effect of soaking or not on the density determination of rock and ore[J]. Geophysical and Geochemical Exploration, 2021, 45(1): 173-177.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.1318 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I1/173

Basic technical parameters of MH-600Z electronic density meter

Statistical table of density of rock (ore) before and after soaking

Average density difference between rock (ore)sample after and before soaking

Density comparison charts of Obo strata talus accumulation iron ore before and after soaking

The photo of Obo strata talus accumulation iron ore

Density comparison chart of hematite before and after soaking

Thin section photo of hematite

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